The 18-year-old has a lot of interest in his signature, both from the Blues and Real Madrid.
Goal.com states that Slonina will soon make a decision on his next move.
The keeper was close to signing for Chelsea before the issue with Roman Abramovich's ownership of the club came up, and the Blues could not complete any transfer deals.
Slonina has just turned 18, but already has 25 senior appearances for Fire to his name.
He is also a dual US and Polish national, which would aid his move to the UK.