The Eagles will clear up four million dollars in cap space, which officially puts them under the cap.
Robinson was drafted by the New Orleans Saints in 2010 and spent five years with the team before playing a season each with the then San Diego Chargers and the Indianapolis Colts before signing with the Eagles this offseason.
A fifth-round draft pick in 2007, Celek played all 11 of his National Football League seasons in Philadelphia, missing just one game during that span.
Speaking of Ertz, the Eagles must now find another reliable tight end option to play behind him with Celek gone. During his Eagles career, Celek totaled 398 catches for 4,998 yards and 31 touchdowns, marking the eighth-most receiving yards and 11th-most receiving touchdowns (tied) in Eagles history. Not only will he go down as one of the greatest tight ends for the Eagles of all time, but he will go down as one of the most beloved Eagles' during his long and successful tenure on the birds.
Celek finished with only 13 catches for 130 yards and one touchdown last season.
With the Philadelphia Eagles having to trim down their salary cap number, it's been a busy week for the Super Bowl champions when looking at some of the moves they were forced to make, ranging from Lane Johnson re-structuring his contract to trading Torrey Smith to the Carolina Panthers.
The three other Eagles tight ends now under contract - Billy Brown, Joshua Perkins, and Adam Zaruba - did not play a single regular-season snap for the team in 2017. He has led the team in receptions in each of the previous two seasons.