Emmanuel has been on loan from Ipswich.
A look at Rotherham’s out of contract players this summer.
The Millers are preparing for life in the Championship.
The on-loan midfielder will return to Brighton this summer.
Newell set up both Rotherham goals at Wembley
How was Richard Wood’s second goal at Wembley described on television?
The Millers beat Shrewsbury in the League One play-off to win promotion to the Championship.
Warne is going for a fifth promotion with Rotherham as either a player, manager or coach.