Ipswich legend John Wark believes defeat by the Canaries in Sunday's East Anglian derby could threaten the future of Town manager Jim Magilton.“A win and all will be well,” said Wark, who works in hospitality in the Sir Bobby Robson suite during matches at Portman Road.

Ipswich legend John Wark believes defeat by the Canaries in Sunday's East Anglian derby could threaten the future of Town manager Jim Magilton.

“A win and all will be well,” said Wark, who works in hospitality in the Sir Bobby Robson suite during matches at Portman Road.

“But a defeat could lead to decisions being made.”

A timebomb has been ticking for much of this season at Ipswich with fans becoming increasingly frustrated at a modest Championship campaign, though in 11th spot Town are nine places ahead of City.

Club owner Marcus Evans has his own thoughts on whether Magilton will be given a fourth year in charge, and has already made it clear that no decision will be made until after the last kick of this campaign. But he could be swayed if there is unrest after a Norwich victory in the derby.

A City double over the Blues would be seen by many as the final straw - whether Evans would think the same remains to be seen.

Town's away form - with eight wins on the road this campaign - has helped keep the lid on protests, but a poor display against Bryan Gunn's men could ignite a general feeling of dissatisfaction against Magilton.

Fans' protests led to John Duncan being removed as Town manager, and earlier this season a demonstration against Geraint Williams was followed a few days later by his departure from Colchester United.