Former Premier League defender Martin Keown has been impressed with the performance of Marcos Alonso this season despite the change in formation at Chelsea.
Chelsea played with three central defenders and two wingbacks under Antonio Conte but Maurizio Sarri has changed to a back four.
“Alonso is different class down the left,” Keown said on Match of the Day.
“They changed their formation this year to adapt but no-one seems to have told him as he is flying own the left hand side even more than when he was a left wing-back.
“We know what he can do, he has scored lots of goals.
“He wants to stay high on the pitch and he’s been a real success for them.”