Former Chelsea legend Frank Lampard has emerged as the shock favourite to replace Gary Rowett at Championship hopefuls Derby County.
Derby County lost Gary Rowett to Championship newcomers Stoke City but Pride Park chairman Mel Morris is already putting plans in place.
The former Barnsley player and Sunderland manager has been linked with returns to both clubs after leaving Ipswich Town.
Sunderland are without a boss following Chris Coleman's sacking.
Sunderland are in the search for a new manager, but Mick McCarthy doesn't want it.
The former Ipswich Town and Scotland boss has confirmed he has applied to succeed Mick McCarthy at Portman Road.
Sunderland are reportedly looking at former Stadium of Light hero Kevin Phillips to lead them back out of League One next season.
Mick McCarthy wants to remain in the Championship after leaving Ipswich Town - but could make an exception for League One Sunderland.
Sheffield United manager Wilder briefly overtook the former Sunderland boss as front runner for Chris Coleman's old job.
Sunderland's relegation to League One was confirmed at the weekend.