Said it multiple times, but if anyone looked closely at our system ( when we was playing good football of course ), then our right winger has been a position on paper only, but on the pitch the RW joins the midfield and leaves Valencia alone on the right flank to hug the touchline and do the crosses. Basically Valencia has been the RB and RW for most of the season, except few times. When we turned to the highly defensive approach we took at the end of the season we started to play with real RW to track back all the time. The LW has always been hugging the left flank though but all players in this position failed except Rashford at some times.
I think this can be what Griezmann will do here in Jose's system if he's willing to play him on the right side then he'll probably cut inside and join the midfield with Mikhi ( The AMF ) while the LW, possible Perisic if we bought him, will be the LW hugging the touchline all the time.
I think Jose's taking exactly the same way he build his last Chelsea side on if we're going for this :
One attacking full back : Ivanovic = Valencia
One defensive full back : Azpe = Darmian
DMF : Matic = Herrera, can bring another one
CMF with attacking roles : Fabre = Pogba
One wing hugging the flank : Willian = Perisic if he comes
One wing with freedom in the attack ( doesn't mean he doesn't have defensive roles, but while attacking can do what he wants and not restricted to position ) : Hazard = Griezmann, possibly
A classic number 10 : Oscar = currently Mikhi. Would love to get James as he's a much better classic number 10 for Jose than Mikhi tbh.
CF : Costa = ? . That's the missing piece for me. We have only Rashford at the moment and we can't enter the season with him and injured Zlatan. We need a striker this summer.