Aberdeen boss Jimmy Thelin stunned Celtic by going with a back five in the Scottish Cup final at Hampden in May and can adopt the same tactics at Pittodrie in the Premiership.
Sean Wallace: Should Aberdeen go to a back five against Celtic at Pittodrie?
Sean Wallace: Should Aberdeen go to a back five against Celtic at Pittodrie?

Sean Wallace: Should Aberdeen go to a back five against Celtic at Pittodrie?
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