Swedish side Malmo head to Celtic for tonight's Champions League playoff, and while the Scandinavians are without their star captain and top goalscorer Markus Rosenberg, they've got another ace up their sleeve.
Young attacking midfielder Magnus Wolff Eikrem is currently on form for the reigning Swedish champions, with 9 goals in 22 appearances so far this season.
The Norwegian international played at Man Utd between 2006-2011, before joining Ole Gunnar Solskjaer (who'd been his manager in the United reserves) at Molde.
Deila will know the danger faced by Eikrem tonight, and if Celtic can keep him under control they should walk to victory. Underestimating their opponents however, could lead to an early exit.