“Especially the central defender, this is where it is essential to get used to someone, when they are wrong, reading situations.
“This is what Sol did, that’s why he played high.”
And Campbell added, “See also Holding entering for the second time, including his body [for a block]. This was very important.
“He had serious injuries, he came back and he did really well to bring his body there. It’s fantastic.
“Yes, he has a great temperament, he’s exceptional on the ball, I think he just needs a series of games now to stay in shape and get into the rhythm and see what he can do.”
Meanwhile, after the victory over Southampton, Arsenal boss Arteta hailed his team’s reaction to the losing streak against Manchester City and Brighton.
He said: “We spent two very difficult weeks with many things that happened to us.
“I was worried after the defeat of Brighton, the way we threw the game away, it really touched the team, confidence is all in this game.
