PHILADELPHIA (973espn.com) — DeSean Jackson suffered a broken finger during practice on Tuesday.

The veteran wide receiver, who returned to the Eagles in the offseason, hurt his left ring finger and there are conflicting timetables on any potential absence.

Jackson, like the other Philadelphia starters, was not scheduled to play in the preseason finale against the New York Jets on Thursday and the early thought was that he should be ready to go for Week 1 of the regular season against Washington.

There is now at least some concern from the Jackson camp and the 32-year-old is expected to see a specialist on Wednesday. The worst-case scenario would be a three-to-four week injury, however, meaning Jackson would miss a game or perhaps two in the regular season.

The Eagles also made a roster move late in the day waiving safety Tre Sullivan and replacing him on the 90-man roster with safety Jason Thompson, a 25-year-old University of Utah product, who entered the league as an undrafted free agent with New England.

Thompson's had plenty of stops along the way -- Chicago, Seattle, Dallas, Green Bay, and Atlanta -- while trying to catch on in the league.

A former quarterback who transitioned to safety in college, Thompson remains raw at the position but was regarded as one of the best athletes in the 2017 draft class while running a 4.45 40-yard dash and showing off a 39 1/2-inch vertical leap.

Sullivan emerged late last season as the Eagles' third safety but faced a tough numbers game this time around with Rodney McLeod back from injury and veterans Andrew Sendejo and Johnathan Cyprien brought in at the position. The Eagles also traded for Rudy Ford at safety last week, sending Bruce Hector to Arizona in the deal.

-John McMullen covers the Eagles and the NFL for 973espn.com. You can reach him at jmcmullen44@gmail.com or on Twitter @JFMcMullen