Heraclitus probably wasn't directing that famous sentence in the direction of the Philadelphia offensive line, but it seems to be the way things are going this season.
Mathis, who sprained his MCL in the season opener against the Jaguars, has trained with the team over the last several weeks and hopes to be back in the lineup Monday against Carolina.
Herremans, who played with a brace on his left arm and sustained an ankle injury Sunday in Houston, will undergo season ending surgery to repair a torn left biceps injury sustained two weeks ago in Arizona.
With Mathis' return, the Eagles now have 4 of their starting 5 offensive lineman from last year's squad healthy, a squad that helped set team records for points scored and yards gained.
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