Manchester City boast a thorough strength of depth throughout their squad, with the Citizens boasting at least two players battling it out for a place for just one position.
Although that is not the case in the goalkeeping department, where Joe Hart, Costel Pantilimon and Richard Wright are the only options for new boss Manuel Pellegrini. No goalkeeper is really up to the standard to displace Hart.
Joe Hart has been first choice for a while now, and it's not been a problem, however some recent wobbles have raised questions from Hart's doubters whether the England stopper needs pushing by a deputy of proven quality and experience.
But Hart has been displaced recently, with Romanian Pantilimon brought in after some poor decisions made by Hart. Feel free to disagree - But I think that Pantilimon is not a worthy replacement for Hart.
And this is where Casillas comes in, he would be the perfect fit for a dogged Manchester City side, and he would not come at a hefty price either.
City, as well as Arsenal and Paris St-Germain, have been linked with the 32-year-old Spaniard, and if he were to go to the Blues it would mark a change in personnel between the sticks for City, it's hard to see someone of Casillas' ability wanting to transfer if he was going to be a reserve and equally hard to see Hart being happy to be second in command.
The move would work well for Casillas, with the Spaniard being left second in command at current club Real Madrid, just behind Diego Lopez. It's obvious that Casillas is fed up with his lack of match action, and would need more time on the field if he wants to make the World Cup squad with Spain next year.
If Casillas was to arrive it might just encourage Hart to better himself in order to retain the number one jersey. It could be a win-win situation for both City and Casillas, and even Hart when you think about it.
Signing a world-class performer like Casillas would be a brilliant move for both Casillas and City, and it may even encourage Hart to get into better form.
Hart's performances between now and the opening of the January transfer window may determine whether it becomes more realistic.
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