A 2-0 defeat at Fenerbahce in Group G on Wednesday left PSV four points behind their second-placed opponents and facing an uphill struggle if they are to reach the knockout stage.
"We lack the quality for the very top level," said Wouters. "You have to be realistic."
Copyright (c) PA Sport 2007, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: http://gms.to/writeforgms