The Facts: As Eagles veterans officially check in for training camp Wednesday, Matthews' knee is among the main topics of discussion. According to News staffer Les Bowen, here is talk around the locker room that Matthews' issue is more serious than tendinitis. But there is talk elsewhere in the building that Matthews could have practiced more in the spring, that the real issue is his contract.

Diehards Line: Matthews sat out much of spring work with tendinitis, which he said last month would not keep him off the field when training camp arrived. Matthews was among the Eagles wide receivers who worked with Carson Wentz in North Dakota earlier this month, and Wentz said Tuesday that Matthews moved well during those sessions. This will be the final year of the rookie deal Matthews signed after being drafted in the second round in 2014. He will make $1,094,000. There has been no indication that the team, tight against the projected 2018 cap, has done anything toward extending Matthews. Bowen notes, the issue there might be how you assess Matthews, a big, hard-working slot receiver who lacks elite speed, and who has been known to struggle with drops. He is one of five receivers in NFL history to catch more than 65 passes for more than 800 yards in each of his first three NFL seasons. The other four are Randy Moss, Odell Beckham, A.J. Green and Mike Evans. ... Matthews made a brief locker room appearance Tuesday when reporters were present but brushed off questions, saying he would talk “in two days,” presumably after the first full-squad practice. ... Stay tuned.