Whelan says he has one of the best managers in the business.
"Roberto is in the same league as David Moyes. They are two totally brilliant managers," said Whelan.
"There is talk both will leave their clubs. I do think they will move on at some point to top European clubs. If we can get to the final and stay in the Premier League, Robert is definitely on for a pay rise! 'If we can win the cup it will be even better than Wigan rugby league bringing back all those Challenge Cups."