Can't see it myself
He's 18 with about one appearance in Italian League - so negligible experience .
It would make sense to buy a new no 2 GK to replace Forster, but that would be someone with a season or more experience, and importantly to be 'happy' to sit on the bench waiting for Vicario to not be available or alternatively there's a deal for Vicario to play in most matches but the new no 2 plays in say EL matches or other identifiable set of matches. Might be any age, even aged 30 looking for a last opportunity to play for a top club.
FYI we've 2 GK's coming out of youth area atm who have potential - Keeley who had a great season at Barnet but is not HG, and 19 year old Gunter who is HG and played a bit in preseason, looking quite promising. So buying an 18 year old who needs experience might be long term planning but doesn't work as an upgrade on Forster who would need to be moved on due to limits on squad numbers