Kalidou Koulibaly is the only defender the Blues have signed this summer following the departures of Antonio Rudiger and Andreas Christensen. Tuchel has made it clear he wants at least one more player in that position.
Meanwhile, United suffered defeat to Atletico Madrid in their penultimate friendly of pre-season. It was a feisty affair in Oslo, where Fred was sent off for Ten Hag’s side.
The Dutchman was happy with his team’s display but felt they deserved more from the result. He said: “The team’s performance was really good.
“The score is not good. We created a lot of chances to score at least one goal, but we didn’t score.
“I’m not satisfied on this point and I said it to the team, it is not acceptable.”