Stephen Warnock will become Gary Caldwell’s first capture of the summer as Latics prepare for their assault in the Championship.
The defender came in on loan from Derby County during last season’s successful title bid, and will make his stay at the DW Stadium permanent when he signs on July 1.
Ormskirk-born Warnock made 11 appearances for Latics since arriving to bolster Caldwell’s squad, and the 34-year-old will join on a one-year deal subject to a medical.
Warnock said: “I’m delighted to get my future sorted out and I’m really looking forward to the new season after promotion. I really enjoyed my time on loan and we achieved something great, so I can’t wait to be working with the gaffer and this group of players again.”