I was looking to bring balance to my midfield and I tried only working with one CDM over several weeks after selling my Makele and leave the job to Kante, but I felt something was missing. I tried Prime Ballack, Prime Petit, Baby Vieira and don't get me wrong they all got the job done as well and are good icons, but in a different way....each one of them had flaws, and this Vieira is not perfect either BUT...after seing all the Pros only using Gullit-Vieira pair (prime) I decided to give a go to the mid-level (but same work-rates as the prime) due to budget restrictions.
He brings something next level each and every game.
I use him as a RCDM with Shadow next to SBC Torreira or SBC Casemiro or Kante (depends on my mood and opponent). He is always in the right position doesn't step too far up the field, but can do box to box. This was a huge plus, as I always found Petit wondering out of positions, meanwhile he is much stronger than any of his peers with the right level of aggression and even a threat to the goal not like Makelele.
He is like a hound, that doesn't leave opponents rest next to him. You literally have to avoid him and use the wings to go through the defense. All his defending stats are really good and close to 95-99 range with chem style. He is just simple the boss in the midfield, there is no other way to put it. On the weekend league I can definitely feel that he brings an extra level of reliability, intimidation and respect.
As described he can defend, but can also score some goals. He doesn't have the best shot ever, but when it comes to corners, his power headers come handy. So far, I scored 6 goals with him, while assisting 3 as well over the course of one weekend league. You can call this a bad ratio, but Vieira is not your typical shine in the spotlight player. He completes the task, in QUIET. You see, that he is there and he makes all kind of saves for you but he wont over take the highlight reel :) but when you check the stats, he has like 5 key passes, 6 tackle and several balls won.
Long story short, I think this is by far the best purchase that I have done in order to bring my team back to balance. I got him for 2.1M and he now trades really low (1.9) due to Carniball and players liquidating and panic selling, might be the time to pick him up even for investing...I won't sell him for sure as he is already an end game player or at least till TOTS, and I don't see a +1M upgrade to his Prime to be that clever of a move, but might do one day as that card is better...duh, but if you are looking for an Icon under 2M that can elevate your team, give you assist, some headers, reliability on defense while scaring your upcoming match in WL or Rivals, then BUY him now.
-Tackles in general (Medium-High Rates are the key, baby is M-M)
-Interception (long legs)
-Aggression (just bullying everyone, but don't make him too aggressive with Chem Style, as he will be start launching into risky tackles)
-Reliability in Defense
-Intimidation (usually opponents are RQ more frequently with him being in the team, at least this is the case for me).
-Balance (sometimes he tips over for no reason) but now I'm just cherry picking.