Kris Commons has told Virgin Media Sport that Celtic's desire to play from the back was "mind-boggling" against Valencia in the Europa League on Thursday night.
The Hoops were outplayed by the La Liga side at Parkhead as goals from Denis Cheryshev and Ruben Sobrino earned Marcelino's side a 2-0 win over the Scottish champions.
At times, Celtic had possession inside their own penalty area and were guilty of losing the ball in the final third as Valencia utilised a high press. Instead of clearing their lines, the Bhoys tried to play their way out of trouble.
Former Celtic star Commons claimed he could not believe that his old side tried to play possession football against a side that take on the likes of Real Madrid and Barcelona.
"I cannot imagine that Brendan Rodgers is ordering Jozo Simunovic to play a ball to Scott Bain inside the six-yard box while being pressed," Commons said. "This is Valencia, who are a top team.
"They are playing against Barcelona, Real Madrid, Sevilla. They are a top team. It is very difficult to go toe to toe with a football team of this talent, of such organisation over the entire 90 minutes. For me, it's just mind boggling."
Celtic failed to have a shot on target throughout the entire second half of the match, and now face a mammoth task to overcome the 2-0 deficit when they travel to Spain to take on Valencia in the second leg next week.
In the mean time, the Hoops face a difficult Scottish Premiership clash on Sunday afternoon, as they travel to Rugby Park to take on Steve Clarke's high-flying Kilmarnock.
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