Tottenham Hotspur have completed the signing of midfielder Mohammed Kudus from West Ham United, the clubs announced Thursday.

Mohammed Kudus has swapped West Ham for Tottenham in a big-money transfer. Spurs have paid a reported £55m for the Ghana international, who has signed a long-term contract.

Kudus joins Tottenham for what was reported to be a fee “in the region of” £55m, though the details and structure of the fee were not announced at the time of this article’s writing. There is likely to be performance-based escalators in the fee in addition to a base amount of money.