Arsenal have confirmed the signing of two new players from their Premier League rivals on loan: Sagna has signed a two-and-a-half year deal with the Gunners and Mamdoudi has signed an 18-month deal.
Mamdouheda was born in Senegal and spent two seasons with the Arsenal academy, while Sagna, who was born and raised in the UK, moved to the Emirates when he was seven years old.
M’Villa, who has been on loan at West Ham for the last two seasons, has been in the English top flight since the age of 12 and was the youngest player to score for Arsenal when they won the FA Cup in 2012.
The two arrivals, who will wear the same number, join the Gunner squad that travelled to England to take on Manchester City on Sunday.
Arsenal will travel to Newcastle on Wednesday to take part in a pre-season friendly.