No way Luis Suarez rides the bench two games in a row.
-----------------MATS---------------
-Semedo-Mascherano-Umtiti-Alba-
---------------Rakitić----------------
-------Paulinho------Roberto-------
---------------Messi-----------------
--L. Suarez--------------------Denis----
Then, idealy, after Barca gets a good lead, bring in Deulofeu for Messi. Or, start Deuofeu instead of Messi, then bring on Messi when Valverde loses his nerve, after 30 or 45 or 60 minutes. Messi must average over a goal a game when he comes in as a sub, after his anger about being on the bench boils up.
Valverde deserves a lot of credit for developing just enough high-performing subs/alternates so far.
Masch looked a bit rusty last game, playing two in a row may get rid of that. He should play at least every third game. Semedo and Alba need to play a lot of minutes this year, mainly because their alternatives are adequate at best. Verm avail if there are injuries or suspensions.
The midfield rotation is doing great, Busquets Rak Iniesta Paulinho S. Roberto playing almost every game, D. Suarez also in the mix, Gomes and Arda out. It will be interesting to see if Rak is the answer to back up Busquets, he's looking really good so far at that spot.
Up front, L. Suarez will rebound/adjust to his new position quickly. D. Suarez must play a lot on the wings, Deulofeu still needs to show he deserves continuing big minutes. Vidal will get more chances after last game. Paco and Arda out.