Arsenal have completed the £27m signing of Brighton attacker Leandro Trossard.

The Gunners are paying an initial £20m up front with a further £7m coming in add-ons.

The 28-year-old has signed a four-and-a-half-year deal with the option for a further year.

Arsenal moved for the Belgium international after missing out on Mykhailo Mudryk, who joined Chelsea from Shakhtar Donetsk on January 15.

De Zerbi: Situation difficult | Tough to replace him in market

Brighton manager Roberto De Zerbi:

“The situation was difficult because I understood he wanted to leave. I’m sorry for the last period, because I preferred [to play] the players who were clear, and not having some different behaviours.

“We will see whether we replace him. We are a good team anyway, and we can play well with Leo or without Leo.

“I think in the transfer window, you can always improve and bring in new players. But we are a good XI now, the players in the squad are very good players. It’s not easy to improve.

“If Tony [Bloom] and the club have the possibility to improve the squad, we will do something.”