Mosquera
Arsenal manager Mikel Arteta has criticised the club's Premier League schedule after midfielder Declan Rice and centre-back Cristhian Mosquera became the latest players to pick up injuries during Wednesday's 2-0 home win over Brentford.
Details of the transfer were not disclosed but British media reported the 21-year-old Spaniard has signed a five-year contract for an initial fee of around 15 million euros ($17.7 million), plus add-ons.