Maybe it has to do with the fact that the current team has better players than the team Zlatan was in. Back then it looked like Pogba was the only one who understood Zlatan's movement and was capable of linking up well with him.
Cavani currently links perfectly great with Pogba as well, alongside Bruno and Greenwood. Meanwhile whenever he played alongside Martial and Rashford it felt for me the entire three are incapable of linking with each other, because Rashford and Martial want to go straight for the goal rather than building up unlike Pogba and Bruno. Even against Rome, Rashford felt like an outlier in comparison to what Cavani, Pogba and Bruno were doing together.
I mean you got it right & its exactly what I remember - our inverted forwards looked out of balance with Zlatan. However we have players like Rashford and Greenwood who have played in an around Cavani and in a weird good way - it feels like Cavani is never there unless he needs to be.
I find this Zlatan thing to happen with the England national team aswell. Kane is our best striker and happens to be a striker that has great passing abilities too - yet I feel like he doesnt blend in with Sterling, Rashford, Greenwood, Sancho or whoever the wider forwards may be. There seems a lack of cohesion that necessary and our game becomes slower or easier to sometimes defend against than needed to be. Kane however has to start because he is England's best striker.
We do have better players now (or improved players like Shaw) - some fans have said that we play like 11 individuals.
This is why I cant particularly see Zlatan coming here and playing like this 11th individual. We would need much more of a tactic to focus on getting the best of him because that's how he plays. Would Shaw be focusing on crossing to him all game rather than having a variety of crosses to the back post, centre box or pulled back?
Maybe it's just Ole that could get better out of Zlatan than we saw with Mourinho- however I'm not so sure.