Arsenal have been in talks to sign Mikel Merino from Real Sociedad, and there has now been a major development in the potential deal. Merino has already agreed personal terms with Arsenal, having rejected interest from Barcelona and Atletico Madrid. The Euro 2024 winner is keen on a return to the Premier League, and Merino is excited about playing under Mikel Arteta. Negotiations appeared slow in recent days, with Arsenal seeing an offer rejected as it fell below Real Sociedad’s valuation of around £30m for the player. Merino is in the final year of his contract at La Real, and having rejected…