Arjen Robben says that Liverpool's acquisition of Joe Cole puts their attack on the same level as Spanish champions Barcelona and claims Chelsea made a huge mistake in letting the midfielder go.

• Forum: Liverpool or Barca's attack?

Robben, who played at Stamford Bridge for three years from 2004, has high praise for Roy Hodgson's men and says Cole will flourish in his new surroundings.

"With a front three of Steven Gerrard, Fernando Torres and Cole I think ...

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