Arsenal manager Arsene Wenger says he’s worried their season is drifting away from them.
A 3-0 defeat away to Crystal Palace leaves the Gunners seven-points adrift of the Champions League places.
The meeting of the reigning Italian and Spanish champions is the highlight of the first night of Champions League quarter final action.
Juventus meet Barcelona in Turin.
While tonight’s other first leg sees Borussia Dortmund play host to Manchester City’s conquerors, Monaco.
Both games kick off at 7.45.