Juan Mata's move to Manchester United was a major surprise.
Although we're slowly adjusting to the sight of the former Chelsea star wearing the colours of the Red Devils, it's still baffling why Jose Mourinho allowed the playmaker to join, of all clubs, Manchester United.
High-profile players are linked with shock moves to big clubs all the time, but which ten transfers would genuinely leave us all stunned, similar to the recent Mata deal?
Scroll through our top 10 - and don't forget to leave your own examples.
Remember: they must be reasonably realistic. So, anyone linking Messi to their Sunday League team should think twice before commenting!
Could any of these deals happen in the near future? Have your say in the comments' section below.