If United are able to field both Robin van Persie and Wayne Rooney they should have far too much firepower for a side that rarely gets beyond this stage of the Champions League and at odds the right side of evens they should be backed here. They have impressed away from home in the Champions League and they should have too much experience and class for Olympiakos. The away win is our betting tip here and at longer odds 2-0 is worth a small bet at around 10/1 with BetVictor.