Swansea have announced the signing of Argentina defender Federico Fernandez from Napoli.
Barcelona will be unable to sign new players in the next two windows after a FIFA committee upheld their transfer ban.
Arsenal have agreed a new long-term contract with teenage forward Serge Gnabry, the Barclays Premier League club have announced.
The 18-year-old Germany youth international has impressed since breaking into the Gunners first team and scored his first senior goal for the club in the 2-1 win at Swansea last month.
That came a week after he made his full Premier League debut in the win over Stoke.