It is often the final hurdle, but some big names have seen major transfers scuppered by medicals that didn't go to plan.
Once fees are agreed and personal terms are negotiated, clubs like to go through the formalities and check their incoming player has a full bill of health. But when a concern, no matter how small, is flagged it can often mean the deal is off - as has been the case with some of the Premier League's leading lights.
With transfer fees going through the roof and recruitment seemingly more important than ever, some teams are simply not willing to take the chance, even if the player does have plenty of promise or quality.
