The Dallas Cowboys should be satisfied with their roster entering training camp. The team has an impressive amount of elite talent to go along with fantastic depth in the trenches. With the way the roster has been constructed, the Cowboys should not only be able to contend this season, but in the future as well (with moderate luck in the health department).

But even though he's happy with the current roster, Cowboys executive vice president Stephen Jones hasn't ruled out the possibility of a trade before, or even during the regular season. In fact, Jones has stated that teams have called to gauge their interest in a potential trade.

As things stand now, the likelihood of a trade appears to be small, but that could all change once training camp begins and talented players succumb to injury. Desperation tends to create deals in the NFL.

With that in mind, let's take a look at the Cowboys' most realistic trade assets before the team heads to training camp.

Joe Looney, offensive lineman

Right now, Joe Looney's trade value isn't very high. But if another team's starting center gets injured in training camp, his value could increase to the point where the return on a trade could be worthwhile.

Looney was thrust into a starting role last season, when he was forced to play next to a rookie, and performed admirably. He wasn't perfect and his play definitely had a lot of warts, but he was solid and rarely made the back-breaking mistake that kills a drive.

Fantastic reach block from Joe Looney here on the NT. So efficient with his footwork to expand outside of the NT and cut him off without ceding ground. Zack Martin has to get a hand on the 3T to slow him down. Asking La'el Collins to reach an untouched 3T is a foolish endeavor. pic.twitter.com/gT6VDPeJBT — John Owning (@JohnOwning) January 8, 2019

He was most effective in pass protection, where he allowed just one sack and three quarterback hits in more than 600 pass-blocking snaps, according to Pro Football Focus. His run blocking was a little more hit-or-miss, but he still proved capable of making tough blocks, like reaching a shaded nose tackle on an outside zone-run play (above clip).

Joe Looney steals Tyeler Davison's soul and Zack Martin kicks out the LB, giving Zeke an open alley to the end zone for the TD. Nice burst from Zeke. pic.twitter.com/g253YwktuX — John Owning (@JohnOwning) November 30, 2018

More than anything, Looney proved that a team can win with him as the starting center, as evidenced by Dallas' trip to the divisional round of the playoffs. He's no Travis Frederick, but he's certainly not a liability either. Looney's value is buoyed by the fact he has the versatility to play all three interior positions (left guard, center, right guard), which is incredibly valuable with the NFL's limited active gameday rosters.

Typically, it wouldn't make much sense for the Cowboys to trade their backup center, especially given that their starting center missed the entirety of last season. Nevertheless, Looney became expendable the moment the Cowboys drafted Penn State's Connor McGovern in the third round this year. McGovern, much like Looney, has the versatility to play all three interior roles. The 21-year-old doesn't have Looney's experience, but he does possess more potential, more power at the point of attack and a better anchor to go along with the fact he's a better athlete.

On top of that, Looney is entering the last year of his contract and, because of McGovern's presence, would be wise to sign with a team where he has a better opportunity to see the field once he becomes a free agent.

The Cowboys could leverage another team's injury to gain draft capital or a player at a position with less depth for someone who they are probably going to lose next season anyway.

Jourdan Lewis, cornerback

The fact that Jourdan Lewis is fourth on the cornerback depth chart illuminates how much talent the team has at the position. There's no question that if Lewis was on almost any other team, he would see the field more often.

The problem is that despite his considerable skill, Lewis just doesn't fit in Kris Richard's style of coverage, which he developed under the tutelage of Seahawks head coach Pete Carroll. Richard wants long, fast and physical cornerbacks who can win at the line of scrimmage and take away the big play. Lewis can play with physicality, but he's not long (31 5/8-inch arms) or overly fast (4.54 40-yard dash at the combine).

Jourdan Lewis' tackling ability is what gives you the confidence to leave him one-on-one in coverage with Alvin Kamara. How many teams can say that about their No. 4 CB? #DallasCowboys pic.twitter.com/beTLJ45ilJ — John Owning (@JohnOwning) December 1, 2018

The Michigan product did carve himself out a valuable role last year, which should be expanded upon this season, but is that role more valuable than a potential draft pick?

Right now, the answer is probably yes, as the Cowboys could likely only get a Day 3 draft pick in return for Lewis. Nevertheless, if an injury makes an opposing team desperate enough to offer a Day 2 pick, Dallas should definitely consider it, especially since he isn't likely to re-sign once he becomes a free agent in 2021.

Even though he's played well for the Cowboys, there's no doubt that a change of scenery would be beneficial for Lewis' career. Not only would a trade give Dallas a chance to get compensation for his departure, but it would also allow the cornerback an opportunity to see the field more and showcase his skills, giving himself a better opportunity to earn a more rewarding contract in 2021.

Trading away cornerback depth is always scary, but the Cowboys did just draft Michael Jackson in the fifth round while guaranteeing money to undrafted free agent Chris Westry -- both of whom are better fits in Richard's secondary than Lewis (albeit not as skilled yet) -- giving them some cushion in case of a potential trade.

Taco Charlton, defensive end

Normally, it would be crazy to think that a team could trade a former first-round pick who is entering just his third year. However, the Cowboys have so much depth at defensive end -- especially if Randy Gregory gets reinstated before the season -- that they could conceivably trade Taco Charlton before the season begins.

Even though he's yet to play at a level commensurate with a first-round pick, Charlton has been most hurt by perception. In comparison, Pittsburgh Steelers linebacker T.J. Watt, who was the fan favorite for Dallas' first-round pick in 2017 and selected just two picks after Charlton, has put together two extremely productive seasons. In the two years since they were drafted, Watt has played in 31 games, totaling 122 tackles and 20 sacks, while Charlton has played in 27 games, totaling just 46 tackles and four sacks.

Taco Charlton did some good things against the run vs TB. Here he does a nice job of staying flat after winning with a quick swim. Also, Maliek Collins is playing better than he ever has vs the run. pic.twitter.com/SF3XhuC2Q3 — John Owning (@JohnOwning) December 27, 2018

Charlton has flashed great ability at times, but he's failed to do so with any kind of consistency thus far. Now, some of that is certainly due to the fact he was hampered by a shoulder injury for much of last year (which is why I'm still more bullish on him than most). But in the NFL, the tape is your resume, and Charlton's resume is not that impressive as it stands now.

Still, the fact Charlton was the 28th overall pick a little more than two years ago means the Cowboys could get something back in a potential trade, even though it won't come close to the first-round pick Dallas used to select him.

The team already has the necessary talent to replace Charlton in the lineup, as Dallas signed Kerry Hyder in free agency and drafted Joe Jackson and Jalen Jelks. Moreover, Dorance Armstrong appears ready to soar in his sophomore season, meaning Charlton may lose his spot as DeMarcus Lawrence's primary backup even if he is not traded.

The Cowboys may only recoup a Day 3 pick, but trading Charlton could enable them to get one of their Day 3 defensive ends on the 53-man roster this year. It's unlikely to happen, but the Cowboys would be foolish to not consider it.

Enjoy this post? More film studies:

-- Why S George Iloka will play an important role in 2019

-- Why CB Jourdan Lewis will be a key reserve in 2019

-- Why rookie RB Tony Pollard will be a versatile weapon in 2019

Twitter: @JohnOwning