But will Poulsen then be used as a sub for Sissoko?
No, he'll play a lot of matches as a starter. Sometimes he'll be paired with Sissoko and sometimes with Zanetti.
I watched Poulsen a lot of times. I have this feeling that many people don't really know him well. He's a very good DMC. He's not only a bully as the Italian media describes him. He's an excellent ball winner (i'm not so sure if Sissoko is superior to Poulsen) and he's passing ability is very solid (again, i'm not so sure that Zanetti is a better passer than him).
That's the whole point, Geof..... Noce/Sissoko and Noce/Zanetti was much weaker than Sissoko/Zanetti. Nocerino was awful passer and tbh, he wasn't winning many balls, he was fouling much more.
On the other hand, i believe that Poulsen/Sissoko, Poulsen/Zanetti and Sissoko/Zanetti are all equally strong CM pairings and that's exactly what we needed, not to feel the difference when our starting XI players are injured. Like Inter didn't feel the difference when one of their starters was replaced by someone from the bench.
Milan suffered a lot when one of Ambrosini/Gattuso was replaced by Brocchi. Now they have Flamini and they don't have to worry anymore with three very good DMCs
Of course, we could say the same about Xabi Alonso. Quality pair, no matter if Xabi's partner would have been Zanetti or Sissoko.
The only difference is that Xabi offers more in attack while Poulsen offers more in defense.
The board and Ranieri thought that we need a "defender" more than an "attacker". Others think differently.
Personally, i'm not so sure. I wanted Xabi but i see the logic in Poulsen (see my previous post).
Time will prove who was right.