Every transfer window, players come and go - and it's all very exciting.
Some players are as comfortable as a memory-foam mattress in their new surroundings - you only have to look at the sparkling way that Mesut Ozil has started his Arsenal career to see the devastating impact a new signing can have on the whole team.
Others, however, flop - or at least take more time to settle into their new club.
Hope is not lost for these five players yet, but it's been a slow start - all for different reasons.
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