I just don't understand why you think we need a striker. We have two already vying for one position. I also don't think CM is as much a priority as LB and CB.
The reason I say we need another striker is that Aguero has 1 year left on his deal (he might sign a longer term one, a year at a time, as he wants to finish his career at his boyhood club), and Jesus is not really a sole striker, but can play across the front line, both of them also spend vast sums of the season out injured, and we need someone to offer something a little different sometimes, not too mention, when we won the title under Mancini and Pellegrini we had 4 strikers for 1 position (occassionally 2).
In regards to the CM, we have got 3 for the 2 spots in the AM role (KDB, Bernardo and Foden) and 3 for the 1 DM role (Rodri, Gundogan and Fernandinho), one of which is starting now to get too old, and another one of them slows our play down each time he plays, so 6 players for 3 roles, and possibly 66 games (all being well), 4 cups, and not expecting them to suffer dips in form or injury is pushing it, we had David Silva to add to the mix as well as them last season, yes Foden can take the spot Silva vacated, but who takes the spot Foden has vacated to move up?, he played 23 games last year, and that is with ALL them who we are left with still around and David Silva as well.....not too mention Bernardo is injured, Fernandinho in his final season, that is why I say and will continue to believe that we need another CM.
The number 1 priority is definately a CB, but not at the expense of ignoring all other positions of need, just not as much of a need as CB, as we have Laporte, Ake and Stones that want to be here out of all our 1st team collection, and that has needed filling for 14 months now.
