Skipp will be out on loan next season, no question
I'm not sure he should be. He'd get enough games at Spurs next season, and without him we'll have to juggle around our CMs - we'd be in the awkward position where we'd know that we'd have him returning for the 2022/3 reason and have to middle through in the meantime
Bring him back, sign a CM and sell Sissoko. Go with PEH, GLC, Skippy, new guy and WInks as our 5 CMs. Gives us strength in depth and a couple HG players