Chelsea enjoyed a return to winning ways when they beat Aston Villa but they will face a more severe test at Dynamo Kiev in the Champions League on Tuesday.
Celta joined Madrid and Barcelona on 18 points at the top of La Liga when Nolito pounced with a late winner to secure a 2-1 victory at 10-man Villarreal.
McClean been described by his own manager as "not the sharpest tool in the box" after he triggered a pitch melee following 1-0 home win against Sunderland.