Roberto Mancini has huge problems on the midfield against Milan in the Derby next week since Marcelo Brozovic and Fredy Guarin both got a yellow card this evening that resulted in suspension for next match. The Nerazzurri coach could be forced to play a 4-2-3-1 formation, considering that Zdravko Kuzmanovic has troubles to fully recover. Probably will Gary Medel and Hernanes play as the two defensive midfielders.
Source: fcinternews.it

Hernanes is a number 10 not a holder. He was phenomenal against Verona.
Easy solution
Kovacic-Medel-Hernanes ?
not much to talk about there..
Palacio-Icardi-Shaqiri upfront..!
In terms of who would be fielded in midfield and attack it’s exactly what you said .. However not to sure if it’s going to be a 4-2-3-1 or 4-3-1-2 or a 4-3-3… Depending on how mancini sees fit to face milan.
how about 4-1-2-1-2 ?
That falls in the same category of a 4-3-1-2…
4-3-3
………………….handa
ambrosio….rano….vidic/jj…….santon
………………….medel
………..hernanes…….kovacic
….shaqiri…………………….paacio
………………….icardi
IMO I think time for Kovacic to step in. He should be able to fill in a midfield role in a 4-3-1-2 formation with Hernanes
Time for mancini to use his experience… because honestly every formation I can think of has a flaw or two
Or play a 4-1-4-1 Medel CDM, CM Kovacic-Hernanes, wings Palacio-Shaqiri! Both Hernanes and Kovacic would get a role that the both like!