Midfielder Lucas is back in Italy this term, with Fiorentina on a season-long loan.
The Uruguayan joined the Gunners from Sampdoria in July 2018 and scored his first goal for the club later that season in a 4-2 north London derby win.
A determined and whole-hearted player who displays great energy in the centre of the pitch, he spent the 2020/21 campaign on loan at Atletico Madrid, where he won the La Liga title after making 19 league appearances.
An established Uruguay international, he impressed at the 2018 World Cup and also featured at the 2019 Copa America. .