Last summer, Sir Alex Ferguson was once again talking wistfully about the quartet of forwards that inspired Manchester United to the treble in 1999.
"For us to achieve what we want to, we must have four strikers of the quality of Dwight Yorke, Andy Cole, Teddy Sheringham and Ole Gunnar Solskjaer," the Scot insisted.
Hope became reality a few weeks later with the £31m capture of Dimitar Berbatov.
Yet Cristiano Ronaldo, Carlos Tevez, Wayne Rooney and Berbatov have failed to live up to expectations so far. BBC Sport finds out why they've been struggling.
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