Eagles finalize 2015 coaching staff (but no more Tra Thomas)

The Philadelphia Eagles have finalized their coaching staff for the 2015 season. The team announced three changes on Tuesday afternoon.

Former assistant special teams coach Matthew Harper has been named the new assistant defensive backs coach. Harper replaces Todd Lyght, who left to join Vanderbilt's coaching staff in early January. Harper, originally hired by the Eagles in 2013, will work with new Eagles defensive backs Cory Undlin, formerly of the Denver Broncos. Undlin was hired earlier this offseason to replace John Lovett. Lovett, along with former tight end coach Ted Williams, has been moved to the Eagles' pro personnel department.

Replacing Harper as assistant special teams coach will be former defensive quality control coach Michael Clay. Clay joined the Eagles last offseason. Clay, who went undrafted out of Oregon in 2013, is only 23. Here's a video of Kelly praising Clay when they were both still at Oregon. Kelly lauded Clay for his knowledge of the game and called him a "coach on the field." Clay will work with special teams coordinator Dave Fipp. The Eagles had the best special teams unit in the NFL in 2014.

Clay will be replaced by outside hire Stephen Thomas. Thomas, 31, has spent the last three years as Princeton's inside linebackers coach. Read more about him here.

One name that doesn't appear to be returning in 2015 is former Eagles offensive assistant coach Tra Thomas. NJ.com notes that Thomas, who was an All-Pro tackle for the Eagles during his playing career, has not had his contract renewed. (Hat tip to @shlynch.) Thomas was originally hired in 2013. The Eagles haven't officially commented on the status of Thomas.

With these moves taken care of, the Eagles coaching staff for 2015 is likely set. A list of the entire staff is available on the Eagles official website.