Here are the front runners, according to SkyBet.
The former Millwall manager took charge of more than 240 games for the Lions before leaving last month.
A dogged midfielder during his playing days at Bolton and West Ham, Nolan has turned his hand to management at Leyton Orient and most recently Notts County.
Most noted for his job in charge of Wales, subsequent jobs at Sunderland and Hebei China Fortune haven't brought about much... fortune.
The Swedish legend had been linked to the vacant Southend job recently.