Most expensive Serie A sales of 2026 January transfer window

Ademola Lookman was the most expensive Serie A sale of the 2026 January transfer window, but Napoli could match the same fee if Lorenzo Lucca’s loan move to Nottingham Forest is made permanent. Here is a reminder of the most expensive departures of the winter transfer window.

The Serie A transfer window came to a close at 19.00 GMT on Monday, February 2. Lookman was the second most expensive deadline day transfer in the world with his €35m switch from Atalanta to Atletico Madrid (not including bonuses).

Lazio were among the most active Serie A sides during the January transfer window, and raised just shy of €60m through their sales of Taty Castellanos to West Ham and Matteo Guendouzi to Fenerbahce.

Official: West Ham United announce the signing of Taty Castellanos on a permanent deal from Lazio (picture via www.whufc.com)

Lorenzo Lucca is an interesting case, as he was technically bought outright by Napoli from Udinese, and then sent out on loan to Nottingham Forest with an option to buy. His two moves this month could turn out to be worth in excess of €60m.

Here are the most expensive permanent sales of the January transfer window, and a list of the most significant loans with option to buy.

Most expensive permanent sales of Serie A January transfer window

Atletico Madrid confirm Ademola Lookman’s signing from Serie A side Atalanta.

Notable loans with options to buy

Official: Lorenzo Lucca joins Nottingham Forest on loan with an option to buy from Napoli (picture: www.nottinghamforest.co.uk)