A key Arsenal player has claimed he’s happy at the Emirates Stadium after claims he could be sold this summer. Mikel Arteta faces yet another crucial summer as he continues to shape this current Arsenal side into a team capable of winning major honours. The Gunners could yet scoop a Premier League and Champions League this season. But Arteta would be the first to admit there is still plenty of work to be done. It’s no secret that Arsenal are searching for reinforcements in the middle of the park. Real Sociedad’s Martin Zubimendi and Aston Villa’s Douglas Luiz are both said to be of interest to…