Nwangwu (hand) is expected to be placed on injured reserve, Eric Allen of the Jets' official site reports.
Nwangwu (hand) was listed as a non-participant on Wednesday's practice estimation, Rich Cimini of ESPN.com reports.
The Jets signed Nwangwu to their active roster Monday.
Nwangwu returned three kickoffs for 157 yards, including a 99-yard touchdown, in Sunday's 26-21 loss to the Seahawks.
Nwangwu (undisclosed) signed with the Jets' practice squad Monday, Tom Pelissero of NFL Network reports.
The Saints waived Nwangwu (undisclosed) on Thursday with a failed physical designation, Nick Underhill of NewOrleans.Football reports.
The Saints claimed Nwangwu off waivers Wednesday, Tom Pelissero of NFL Network reports.
The Vikings plan to cut or trade Nwangwu on Tuesday, Tom Pelissero of NFL Network reports.
Nwangwu failed to record a single snap on offense in Sunday's 30-20 loss to the Lions.
Nwangwu had one carry for one yard and had one kickoff return for 14 yards in Saturday's overtime loss at Cincinnati.