Premier League managers will be sending their scouts to Europe's top teams over the next couple of months in hope that they can discover a hidden gem to join their side ahead of next season.
The Premier League's top boys will also look to spend big on the world's most established players in hope that they can compete for next season's title.
However there is another option in the transfer window and that is to target players who are coming to the end of their deals at their current clubs.
That will allow clubs to sign players for a reduced fee as their managers will not want to lose a star asset for free the following year.
Here we take a look at the players whose contracts expire in 2015 so could be available for transfer in the summer.
The following players have all been linked with moves to the Premier League over the last few months.
Click through the following pages to see who we have included in our shortlist.