The Eagles hope Tennant can compete for playing time with Dallas Reynolds, who has filled in for Kelce since the team's starting center suffered a torn ACL and MCL in Week 2.
Tennant was cut Oct. 20 by the New England Patriots, and the Eagles quickly snatched him off of waivers. The Boston College product was drafted in the fifth round in 2010 by the New Orleans Saints, and ended up playing 28 games over two years with them. The Patriots signed him after he was cut before the start of this year's regular season, but he did not appear in a game for New England.
The team had previously released Vallos after final roster cutdowns, but re-signed him after Kelce's injury. The team re-signed Vallos, and he earned playing time alongside Reynolds in the wake of Kelce's injury, but had been inactive since Week 5.