After agreeing to terms on a five-year contract extension with tight end Zach Ertz, and signing Brent Celek to a new deal, the Eagles appear to be off and running in the 2016 offseason.

As NJ Advance Media reported last week, Ertz is likely just the first young player to ink an extension this offseason as the Eagles look to build around homegrown talent.

"He is nothing if not aggressive," a league source who requested anonymity told NJ Advance Media of Eagles Vice President of Football Operations Howie Roseman. "He's extra glad to be back in the saddle."

Roseman and Co. seem to be gathering the ammunition to put that aggressiveness to work in short order.

Celek was set to count $5 million against the cap in 2016, in the final year of his old deal, and the move likely was made at least in part with an eye towards freeing up cap space for this offseason and beyond.

As Eagles owner Jeffrey Lurie pointed out during Doug Pederson's introductory press conference, the team is embarking on a search for a new personnel head. While there has been no official comment from the organization about how the new power structure will shape up, it is expected that the new personnel hire will answer to Roseman.

In the past Roseman has not been afraid to dip into the free agent waters, as was the case prior to the 2011 season when the Eagles assembled a group dubbed 'The Dream Team' by quarterback Vince Young after the lockout truncated offseason.

This time around, though, the focus will likely be on inking the likes of offensive tackle Lane Johnson, defensive ends Vinny Curry and Fletcher Cox to extensions and figuring out whether or not to re-sign impending free agent quarterback Sam Bradford.

It was Roseman who reached out to Ertz' agent Steve Caric to initiate contract talks, which underscores the notion that he is back in charge of the personnel department after losing a power-struggle with former head coach Chip Kelly.

Caric says he believes that Roseman will return to his old playbook now that he is back in power.

"That's kind of the Modus Operandi, here in Philly," Caric said Monday. "They try to find those core young guys and lock them up early. They've been doing that since Joe Banner was here. I think it's a continued philosophy of the organization."

The Eagles will have many difficult questions this offseason and limited cap space -- at the moment to answer them with. Currently the Eagles have just over $18 million in cap space but several high priced veterans could either be released or have their deals restructured to create more financial flexibility in the coming weeks.

There hasn't been a dull moment around this team, especially this time of year, and that trend appears to be continuing.

Matt Lombardo may be reached at MDLombardo@yahoo.com. Follow him on Twitter @MattLombardo975. Find NJ.com Eagles on Facebook.