The window to trade with the Tennessee Titans for the second overall pick in the NFL Draft is getting smaller by the day, but it now appears as if the Philadelphia Eagles are all but out of the conversation.

To his credit, Eagles coach and player personnel chief Chip Kelly has stated he will not be pursuing Marcus Mariota, the quarterback he recruited to play at the University of Oregon. The two sides have been seen as a natural fit regardless, but as reports indicate, the Eagles and Titans do not appear to be likely trade partners.

Connor Orr and Ian Rappaport reported for NFL.com that the San Diego Chargers, Cleveland Browns and St. Louis Rams appear to be the most likely teams to be able to swing such a deal. However, it all hinges on which quarterback the Tampa Bay Buccaneers draft first overall and that appears to be Jameis Winston.

First, the Chargers' interest in Mariota appears to be very real, Bolts from the Blue reported, and they have arguably the best trade piece to acquire the Titans' selection: a franchise QB. If the Chargers are willing to trade Philip Rivers, they seem like they would certainly be able to move up from picking 17th overall to second.

But the Browns have two first-round picks to offer the Titans and Pro Football Talk's Mike Florio learned the Browns would be more than willing to take a QB in the first round for the third time in the past four drafts (Brandon Weeden in 2012 and Johnny Manziel last year).

Then there are the Rams, who have the 10th overall pick and a coach in Jeff Fisher with past success installing mobile QBs in NFL offensive schemes. Orr and Rappaport noted the Browns and Rams' lack of a solid starting QB to offer the Titans hurts their chances in a possible trade.

Noticeably absent from both reports are the Eagles, who just signed Tim Tebow to compete for the starting job with Sam Bradford and Mark Sanchez.

Complicating matters further is a report last week from CBS Sports' Jason La Canfora, indicating the Titans could ultimately draft Mariota to field offers for him after the draft concludes.