In the run-up to the January transfer window, we're ranking some of the best and worst signings by the Premier League's elite clubs over the past decade.
We looked at every arrival from the 2009-10 season onward -- though only permanent deals count, so no loans or promotions from the youth team (sorry, Marcus Rashford) -- and whittled down each list to five .
There's no magic formula to decide how they rank; it's purely how we think fans (having asked a few ourselves) would place them. No doubt you will agree with some and disagree with others!