I don't know just look Kalas, Aké, etc situation. They are young and they won't play this season. That's why you keep your old guard, as backup just in case of but you don't recall people from loan to let them rot on the bench. KDB, Kalas, Lukaku, and so on, should have been loaned from day 1 if there were no real plan for them this season. Don't forget that Romelu lost his first chelsea season staying on the bench. He wanted to stay with chelsea and refused a loan. So this year, i didn't want to repeat that poor experience