Holland midfielder Denny Landzaat is due to start negotiations on a move to Wigan on Tuesday.
The Latics last week agreed a fee with AZ Alkmaar for the 30-year-old, who is scheduled to fly in for talks with the prospect of becoming manager Paul Jewell's fourth signing of the summer.
AZ spokesperson Erik van Leeuwen said: "We have reached an agreement with Wigan, and they are the only club we have we have reached an agreement with."