#3 Petr Cech
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While some fans may consider Chelsea resigning Petr Cech as something of a step backwards, the former Czech number 1 may be the most economical option for the club.
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Cech won 4 Premier League titles in his 10-year reign at Chelsea, before leaving to make way for Courtois in 2015, and is considered a legend at Stamford Bridge.
Cech's position as Arsenal number 1 is under threat following the arrival of Bernd Leno from Bayern Leverkusen this Summer, and a move back to his old stomping ground may be the best move for him.
Unlike a lot of keepers on this list, Cech would probably come for a reasonable price tag, given his age and the fact that he is likely to be out of favour at Arsenal.
Edited by Sai Krishna