"It's so nice to have him back. I didn't speak to him before he came because I didn't even know he was coming! I was looking on my phone and I just saw he's close to joining Arsenal," he said to Sky Sports. "I saw him after our game against Brighton and it was nice to see him again because I already had a good relationship with him at Chelsea. He's a top-class player, he proved it so many times in the Premier League already. I think it's great to have him here and I think he's really going to enjoy his time here."