Cristhian Mosquera has become Arsenal’s fifth signing of the off season after completing a move from Valencia.

The Gunners struck a initial fee of around £13million (€15million) with the La Liga side, as Mosquera signs a five-year deal in north London, with an option to extend by a further 12 months. The 21-year-old centre-back arrives with an excellent pedigree, and is recognised as one of the best young defenders in the Spanish top flight.

When Mikel Arteta spots an opportunity to get in the good books of a talented young player, he will seldom let it pass by. Even during the contract signing ceremony of Arsenal 's newest signing, Cristhian Mosquera, the Gunners boss produced a comical moment which could also help him secure a promising prospect.