From an article last offseason:
Eagles also shopping Evan Mathis
http://www.philly.com/philly/blogs/sports/eagles/Eagles-also-shopping-Evan-Mathis.html
Add another Pro Bowler to the list of players the Eagles are shopping.
Guard Evan Mathis has been placed on the market, according to NFL sources, who confirmed an NFL Network report Wednesday morning.
Mathis, who was voted first team All Pro by the Associated Press last season, wants a new contract, according to a source close to the situation. His agent, Drew Rosenhaus, approached the Eagles about a new deal in February and the team responded by suggested a trade, NFL sources said.
Rosenhaus shopped Mathis around at the NFL combine in Indianapolis in February and since then, but there haven't been many nibbles from teams.
The Eagles view Mathis as a very good guard in their system, which requires a good deal of zone blocking, but many other teams have been lukewarm about him because he's not considered a traditional mauler, league sources said.
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Maybe I'm not crazy. But then I look at the list of teams and I'm pretty sure none of them run a ZBS.