Marin has joined on-loan from Chelsea.
Montella said: â€śWe signed Marin because heâ€™s short and that way I can feel taller! In the last two years he hasnâ€™t expressed his quality to the full, so we want to get him back to the player he was before.â€ť
Cristiano Piccini has been loaned out to Real Betis. â€śIn Spain he can improve technically and it was only right he go out to play more regularly.â€ť
For the big stories and the banter follow us on Twitter: @tribalfootball