Thomas Tuchel has explained that Andreas Christensen was suffering with a headache during the first half of our win over Barnsley and that was why he was substituted.

The Blues defeated Barnsley 1-0 in the FA Cup at Oakwell to set up a quarter-final clash with Sheffield United, with Tammy Abraham netting the winning goal.

Tuchel made a double change at half-time and explained that the two withdrawals were made for differing reasons.

‘I was not frustrated,’ he explained. ‘I just wanted to give them a little bit of help because Barnsley attacked our back three with their front three very aggressively so we decided to change to a back four.

‘We took Marcos [Alonso] out because of this tactical change and Andreas [Christensen] had to go out because he had a headache.‘We made these two changes to make it a little bit easier to come to the opponent’s half and overcome the first three players and the pressing line.’