Celtic, claims pundit Noel Whelan. Keane has been linked with a return to management in Glasgow while former Manchester United teammate Butt leaving his Old Trafford coaching role earlier this week.
Irishman Keane has been consistently linked with the Parkhead hot seat and Butt is now being touted as assistant boss after departing the Premier League side for a “new professional challenge".
Former Aberdeen striker Whelan reckons the combination of the two would lift the Parkhead dressing room after a slump after a disastrous season.
He told Football Insider: "You keep people close to you that you’ve worked with. Get all the latest Celtic news sent straight to your Inbox every day by signing up to our newsletter.We cover every morsel of.
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