Andrija Zivkovic is a very poor player. His attributes are poor for any position in this tactic and his total CA is 113 which suites to the mid table teams from Sky Bet Championship the league below.

It would be possible to use him in the starting eleven only when he reaches at least 140 CA and this could take him about 3 - 4 seasons.
Munir isn't improvement for Newcastle. He has only 133 CA but as backup he is great because he is able to cover many positions and you get him almost for free.
Jvier Saviola also isn't improvement for Newcastle. He has only 135 CA and he is 32 years old so his attributes decline at great rate every season but he is also a good backup for not more than one season because he costs really cheap for his ability but as I said you can expect the next season his CA will decline sufficiently.
Alvarez Balanta is a great transfer for any club.
I would prefer Anita over Sissoko as MC.