Thomas has elected to retire as an NFL player in order to pursue a doctorate in psychology, NFL.com reports.

Thomas (foot) is expected to be cut by Miami in a move to clear up salary cap space, Barry Jackson of the Miami Herald reports.

The Dolphins have placed Thomas (foot) on IR.

Thomas snagged two of four targets for 11 yards during Monday's 27-20 win over the Patriots. He fumbled during the contest.

Thomas brought in all three of his targets for 20 yards and a touchdown in Sunday's 35-9 win over the Broncos.

Thomas brought in five of six targets for 52 yards in Sunday's 35-17 loss to the Patriots.

Head coach Adam Gase relayed that he expects to get Thomas more involved in the offense as the season continues, Roy Cummings of Florida Football Insiders reports. "Yeah, with Julius, I didn't get him going enough early in the season," Gase said this week. "But I feel like we've gotten [back] into a little bit more of a groove with him now, and I still think there are some other things we can do."

Thomas had four receptions for 30 yards as the Dolphins lost to the Buccaneers 30-20 on Sunday.

Thomas caught two of five passes for eight yards and a touchdown during Monday's 45-21 loss to Carolina.

Thomas (knee) was a full participant in practice Tuesday, Armando Salguero of the Miami Herald reports.