Considering how laid back Arsenal have been in the summer transfer market so far, these final hours could prove really busy. Mikel Arteta has only seen two new faces land in north London over the summer with the Gunners selecting their targets very carefully. The latest player to be confirmed as an Arsenal player is Mikel Merino after his move from Real Sociedad was sealed earlier this week. Merino has already bedded in at Arsenal having trained with his new teammates ahead of the game on the weekend against Brighton & Hove Albion. A matter of hours now remain in the market and there is potent…