Happy legal tampering day!

As of Monday, NFL teams are legally allowed to start talking with the agents for prospective free-agent players -- that is, players whose contracts expire at 4 p.m. ET Wednesday when the new league year begins.

The next couple of days are where the first wave of free agency really happens, and by 4 p.m. ET Wednesday, we'll likely have a sense of where most of the big names are headed.

So, before it all gets started, I felt I'd share with you a little bit of what I'm hearing about how the week might play out:

Jump to:

Under-the-radar positions | Trade rumblings

Thrifty playoff teams | Don't be surprised if ...

Quick hitters | What about the QBs?

Don't be surprised if ...

Sources familiar with the Raiders' thinking say they would like to use their salary-cap space on offensive players and find defensive solutions in a defense-heavy draft in which they hold four of the top 35 picks. Bell's market has been a bit tough to figure out. I've heard the Jets, Ravens and Texans listed as interested teams, but no one seems to know who's going to pay Bell $12-13 million a year or more. Jon Gruden and the Vegas-bound Raiders obviously aren't afraid to be aggressive.

... Tevin Coleman gets a really nice deal

Maybe one like the four-year, $30 million deal Jerick McKinnon got from the 49ers last year. There are teams looking for running backs who are telling people they're more interested in Coleman at his price than Bell at his. Look out for the Jets, Ravens and Texans if they don't get Le'Veon, and don't completely rule out the 49ers, who don't owe McKinnon another guaranteed penny.

Tyrell Williams averaged 15.9 yards per catch for the Chargers in 2018. Jake Roth/USA TODAY Sports

... Tyrell Williams gets a lot more than you expect

The wide receiver market is a bit thin (except for one specific part of it we'll get to later), and there's a list of teams interested in finding out what the 6-foot-4 Williams would look like as their No. 1 wideout. Teams looking for receivers include the Colts, Jets, Browns and Bills, who happen to be the top four teams in terms of projected available cap space, as well as the Titans, 49ers, Cardinals, Lions, Eagles and Patriots. Williams is going to have a huge market.

... Earl Thomas ends up in the AFC West

The Chargers' release of Jahleel Addae caught my attention, as I'd been told to watch out for them as a surprise potential Thomas destination. They had some interest in Eric Weddle before he signed with the Rams, and while Thomas will cost a lot more than Weddle did, the Chargers could view him as the player who puts their stacked roster over the top. Of course, the Chiefs, who edged out the Chargers for the AFC West title in 2018, have a need at the position as well and were among the teams interested in trading for Thomas last fall.

The safety market is flooded, but Thomas is in a class by himself and could become the league's highest-paid player at the position this week.

Four under-the-radar positions to watch

Slot receiver

Tyrell Williams, as we mentioned earlier, should benefit from the dearth of outside receivers in this market. But I'm hearing numbers in the $9-10 million-a-year range for slot guys like Adam Humphries, Jamison Crowder and Cole Beasley, all of whom could move on from their former teams for big deals elsewhere.

Inside linebacker

C.J. Mosley and Anthony Barr are big names whose teams didn't franchise them because the linebacker franchise number ($15.443 million) was too big. The number is inflated because pass-rushing 3-4 outside linebackers are lumped together with linebackers like Mosley and Barr, who don't rush the passer. Neither Mosley nor Barr can expect to make $15 million per year on a new deal, but it's not crazy to think they could each get Luke Kuechly-level $12 million-a-year deals if enough teams are interested.

Guard

The Rams will look different on the offensive line, where center John Sullivan is a free agent and so is left guard Rodger Saffold. The latter is almost surely gone from L.A. and is the top guard on a relatively thin market. Two veteran guards -- Kevin Zeitler and Kelechi Osemele -- have been traded in the past few days. More teams are looking.

Kicker

Not sure if you noticed, but the Patriots didn't franchise anyone, including kicker Stephen Gostkowski. Many expect them to re-sign him, but would another team (Bears?) swoop in and give Gostkowski a top-of-the-market deal based on his career accomplishments? And if so, do we have to wonder what the Patriots know? They've had only two different kickers since 1996. If they're making a change at the position, there must be a good reason.

Two recent deals that will affect the market

Brandon Graham's extension with the Eagles

It's reportedly for $13 million per year (though we haven't seen the full details yet, possibly because the Eagles are waiting until the new league year to officially execute it for accounting purposes), and several teams at the combine were disappointed with the Eagles for paying that high a price for a soon-to-be-31-year-old pass-rusher. The deal allowed the Eagles to trade Michael Bennett to the Patriots, and it likely drives up the price for free-agent pass-rushers such as Za'Darius Smith. Graham has the same agent as Justin Houston, a similar-age pass-rusher who was cut by the Chiefs on Sunday and is free to sign with any team immediately.

New Raiders receiver Antonio Brown will get a chance to play against the Chiefs twice in 2019. AP Photo/Ed Zurga

Antonio Brown's new Raiders contract

Again, we have yet to see the full details, but ESPN's Adam Schefter is reporting Brown will earn $19.8 million per year in new money on the contract the Raiders will give him once his trade from Pittsburgh to Oakland becomes official. Obviously, Tyrell Williams can't hope for a number like that, but it doesn't make life easier for the Falcons, Saints and Chiefs, who are working on extensions for Julio Jones, Michael Thomas and Tyreek Hill, respectively. The first $20 million-a-year wide receiver contract could arrive this summer.

Three playoff teams that might not spend big

The Cowboys are so focused on extensions for Dak Prescott, DeMarcus Lawrence, Amari Cooper, Byron Jones and (eventually) Ezekiel Elliott that they aren't expected to be major players in free agency. Some people have connected them with Earl Thomas for a long time, but his price is likely going to be too high for the Cowboys, who might wait out this deep safety market and find a bargain.

If the Bears lose safety Adrian Amos and slot corner Bryce Callahan, they'll have to fill those spots. But Chicago's big offseason was last year, and the Bears like the roster they have. Watch out to see what they do at running back, where Jordan Howard could be cut and Adrian Peterson could be a free-agent target to replace him.

Like the Cowboys, Seattle is focused internally. Starting guards J.R. Sweezy and D.J. Fluker are both free agents, and if they leave the Hawks will have to find some other guys with initials instead of first names to play guard. Linebacker K.J. Wright (what's with the initials?) is another free agent they'd like to keep, and they are preparing for extension talks with defensive end Frank Clark, linebacker Bobby Wagner, defensive tackle Jarran Reed and the big one: quarterback Russell Wilson.

Tyrann Mathieu signed a one-year deal with the Texans last offseason, hoping to cash in this year. Isaiah J. Downing/USA TODAY Sports

Three coach-player pairings to watch

Multiple sources expect former Patriots defensive end Trey Flowers to get a monster deal (maybe in excess of $18 million per year) on the open market after many of the top free-agent pass-rushers got franchised. Two of Flowers' former New England defensive coordinators are now head coaches: Brian Flores in Miami and Matt Patricia in Detroit. Watch Flowers for the Lions, who are expected to be among the most aggressive players on this market.

Landon Collins was a first-team All-Pro safety in 2016 when he was with the Giants and Steve Spagnuolo was his defensive coordinator. Spagnuolo is now the defensive coordinator in Kansas City. Collins might not be a perfect fit for the Chiefs, whose top choice would be a free safety. And a team like the Colts, who already have Malik Hooker for the back end, might make more sense for Collins. But if anyone knows how Collins can help a defense, it's Spagnuolo.

Giants fans might want the team to reunite safety Tyrann Mathieu with former Arizona defensive coordinator James Bettcher in East Rutherford, New Jersey, but the more likely former-Cardinal Giants target is free-agent linebacker Deone Bucannon.

Two trade rumors that aren't about to go away

At last check, the Giants still had no active trade talks involving their star wide receiver. And I still seriously doubt ownership signs off on a trade that would leave the Giants with $16 million in dead money on their cap and having paid Beckham $21.5 million in cash for 12 games. But there are teams (specifically the 49ers and Browns) still hoping to talk the Giants out of Beckham, and there are still people around the league who believe such a move isn't impossible for the right (exorbitant) price. This isn't an Antonio Brown situation, where the team feels it has to dump a guy for whatever it can get.

Odell Beckham Jr. signed a five-year extension with the Giants last August. Matt Bush/USA TODAY Sports

It's hard to imagine the Buccaneers' defense without McCoy, but the Bucs really could use the $13 million in cap savings they'd get by trading him. Watch Tampa Bay's other moves in the coming days (cut or trade DeSean Jackson, for example?) and see whether they end up needing the cap room and getting what they need to get in exchange for a well-liked star.

Quick hitters on four big names

Houston has been trying to re-sign Tyrann Mathieu , but so far it hasn't tried hard enough. He still could end up back there, but more than one source has told me to watch out for Baltimore.

Nick Foles is still expected to sign a multiyear deal with the Jaguars, but there's some tough negotiating still to do. Jacksonville is more or less the only place Foles can go and start, and Foles is the top quarterback option for the Jags. It would be a shock if this didn't get done, but since neither side has much leverage, there could still be a hiccup or two before the final details are nailed down.

Even coming off a November ACL tear, 25-year-old cornerback Ronald Darby is of interest to several teams. Don't be surprised if he gets a big deal.

The Saints are still hoping to bring back running back Mark Ingram, but not for much (if any) more than the $4 million or so per year he was making with them on his most recent deal. He'll check out the market, but he's got it pretty good in New Orleans.

What about the backup QBs?

Unless the Nick Foles deal totally collapses in Jacksonville or Miami signs him to be a starter, Bridgewater's best play might end up being a return to New Orleans for another season as Drew Brees' backup.

Expected to be cut by the Dolphins, Tannehill could surface as Sam Darnold's backup with the Jets, where new coach Adam Gase has always been a fan.

The obvious fits are Baltimore and Carolina, where the starters are mobile, and the offenses are somewhat designed around that, which is one of Taylor's strengths.