Darren Bent insisted he had to leave Aston Villa after too many "slaps in the face".
Brighton defender Greg Halford has agreed to extend his loan deal from Nottingham Forest until the New Year.
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.