Salah for me - Mane works his socks off, both are pretty greedy but I think Salah more so, and his work rate isn't a patch on Mane's
I would cash in on Salah and give Mane a new contract - although the vibes coming from Barca and Bayern maybe enough to sway Mane to take one final big paycheck and win more trophies
The other scenario is they both leave and we buy Nunez from Benfica, Bellingham and Tchouameni - that would be awesome!