It's not that ... he not only likes the cups and want to win everything there is possible because he is a serial winner but going long in cups gives a chance to keep everyone in the squad happy as well.
Mendy when fit will come in then we'd have three left backs ... Zinchenko plays now but might be second choice when Mendy returns ... then we have Angelino too.
On the right, Walker is now no. 1, what about Cancelo, he will play not kids ... by the time later rounds come, then Walker might be second choice by then ... then what? He doesn't play?
Go on to all positions ... Mahrez or Bernardo? Silva or Foden? KdB or Gundo? Aguero or Jesus?
We have enough senior players on sidelines to come in for cup games that's how it will be ... there will be one or two young guys (Garcia and Foden) but even them both are in first team now and not really academy or EDS team members ... so that'd be that ... and that's why we'd go all the way in both domestic cups this season again!