I am not sure this is possible because than we would have to find RW who would cover Messi spot in the midfield in defense. There is not a chance Messi would cover this space in defense. Never in a milion years. Not to mention we would have to lose on CM player to enable this formation.
I really don't see a player like that in the market. A player who is great in RW and who is also good in defense. If we put a usual RW player in our squad and move Messi in the middle we would actually have 4 players who do not defend at all and that would be waaay to many.
Let's imagine cancelo is that player
He is very good in attack and though he is poor defensively as a RB, he can certainly defend as a RW
Another example would have been Cuadrado of Fiorentina, don't know his current state.
I am sure there are more players of this quality
When we attack the formation I gave you will be the one we use
When we are defending it switches to
Sergi....... Pique .......Umtiti ......Alba
Cancelo...Busquets....Iniesta......Neymar
..............Messi.......Suarez
Cancelo takes a few steps back.
Messi and Suarez will be up top roaming around waiting for counters
Losing a CM is not such a big deal. Bayern won the treble playing two CMs, Schweini and Javi Martinez, two wingers and two forwards,
No big deal