Nottingham Forest manager Billy Davies is the latest big name to be linked with the Celtic vacancy, despite his well reported love of Rangers as a kid.
Davies, currently heading for the championship playoffs in England, is believed to be very interested in a return to his native Glasgow.
Any move for the former Motherwell player would also feature his assistant at Forest, the former Ireland striker David Kelly.
Former Seville boss Manolo Jimenez has also professed his interest in the job, a month after he was sacked by the Spanish club.
Jimenez told the Scottish Sun, “I’d love to coach Celtic because they are the Real Madrid or Barcelona of Scotland with the biggest support.
“I was manager of the Sevilla B team when Celtic fans invaded Seville for the UEFA Cup final against Porto. Seville welcomed the Celtic fans and they will always be remembered.
“Jock Wallace was my manager at Sevilla when I played there alongside Ted McMinn. And, of course, I was manager of Sevilla when we beat Rangers in the Champions League.
“I’ve also been learning English for the last three months -- an hour a day -- and my teacher is actually a Scottish man called Ally.
“It’s funny how I’ve a few Scottish connections. Maybe God is telling me I will be the next Celtic manager, which is something I would love.”
Leicester boss Nigel Pearson has also been linked with the job.