If he’s 21 and not running back, I would say that is even more concerning. Basics at any level and he’s cost us multiple times this season ‘being lazy’. He lost the ball pretty much every phase of play. I by the way hope he comes good.Why because he didn’t chase back twice, he’s 21 yrs old, he’s been here and in this country 6 months, he’s still adjusting to how Pep wants his players to play, let’s not forget it took Mahrez, Jack and Rodri a full season to learn the “Pep Way”. We will see a different player for sure next season, stronger and faster. I can remember Mourinho saying the exact same comments about Kev when he was manager of Chelsea, look how that worked out.