Would you sell Semedo to City for 40m and get back Cancelo on loan for a season with a buy option for let's say 30m? IF Cancelo would convince we could buy him if not just send him back and bring Emerson next year. I don't think it's very likely but if Pep really wants Semedo and at the same time wants to get rid of Cancelo then something could be done. Yeah, Cancelo is not perfect but he's still much better than De Scigliio. I would prefer this deal than trying to include Semedo in a swap deal for Lautaro or Pjanić because we would be in a position of strength during negotiations in this case as a selling club.
Well, even better would be to just sell Semedo for whatever we can get and buy Dest for around 20m but if that's our plan we should move quickly to get him before Bayern or PSG. And with our obsession with Lautaro I don't think we'll buy other players before we'll get him so it will probably be too late in the end.