According to Mark Wilson, Celtic’s new boss would have to overhaul the team’s defensive system.

Around 2006 and 2012, Wilson, a right-back, appeared in over 100 games for the Hoops.

Celtic have had a disappointing season, trailing champions Rangers by 23 points in the standings and exiting the Europa League in the group stages when their arch-rivals advanced to the last 16, and a big part of their problems can be attributed to their shoddy defending.

Celtic allowed 19 goals in six European matches, a joint-high for the competition (alongside Dundalk and Ludogorets).

They’ve conceded 29 goals in the Scottish Premiership, which is less than one a game, but it’s nothing compared to Rangers, who have just surrendered 13.

For Wilson, the unresolved issues for Neil Lennon’s long-term replacement are obvious.

“Any manager who is looking at this Celtic side and has done their homework throughout the season, not just against Rangers, can clearly see the weaknesses,” he told Sky Sports