The NFL trade deadline is only a month away, but teams are already trying to find ways to improve their team. With injuries and surprise retirements happening, there's no surprise that several teams need to add to their depth at this point of the season. The one area where most seem to need help is their offensive line, and ESPN's Dan Graziano has the names of the teams who are in the market.

“It's tough to swing trades for offensive linemen, since the demand massively outweighs the supply. But teams that could/should be in the market include the Patriots, Ravens, Eagles and, of course, the Packers, who have been signing dudes out of retirement the past couple of weeks because their line has completely fallen apart,” Graziano wrote.

The Packers have been dealing with injuries to their offensive line since the start of the season, and it's definitely affected their play over the last few weeks. The Ravens and Patriots could also use some help in that department, especially with some of their key offensive weapons hurt.

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The Eagles may have it the worst out of all of them right now, as Landon Dickerson was put on injured reserve a few weeks ago, and Lane Johnson just announced his retirement. After reshuffling their line following the Dickerson news, they're going to have to reshuffle once again.

If there's one person who doesn't mind doing what it takes to get the guy he wants, it's general manager Howie Roseman. The only thing is that with Roseman and the other general managers looking to trade for a lineman, someone has to become available. There haven't been any rumors about a player on the trade market, but as the deadline gets closer, a few names should begin to come up.