Manchester United have approached Carlos Balebas camp in a bid to sign the Brighton midfielder this summer.
The Seagulls are however determined the keep Baleba beyond this summer.
As a result, they could set his price tag as high as 100million.
This was revealed by football transfer expert, Fabrizio Romano, via his X account on Wednesday.
Romano wrote: Manchester United approached Carlos Baleba's camp this week to be informed on player's situation.