Arsenal are closing in on the signing of Real Sociedad midfielder Mikel Merino, with a deal now agreed between the two clubs. The 28-year-old will now join Arsenal in the coming days, and Mikel Arteta played a huge role in recruiting Merino ahead of Barcelona and Atletico Madrid. Merino will reunite with former teammate Martin Odegaard in the Arsenal midfield, with the pair playing together when Odegaard was on loan at Real Sociedad in 2019-20. The midfielder follows Riccardo Calafiori into the club, and Arsenal could attempt to add a forward this summer. However, one of their key targets in A…