Interesting that you asked about PSG. They played 4-4-2 last year and the safe thing would be to just continue it as they had acquired the worlds best striker partnership in Ibra and Cavani(How many clubs has had a better one than that on paper in history?).
Blanc however early made it clear that he doesn't think 4-4-2 is viable even with Ibra/Cavani on top which for a 4-4-1-1 would be pretty optimal. Ibra has always been better as a play-maker than a striker albeit lazy(read heavy) and Cavani is a pure goal-scorer with good work-rate.
Like you say Cavani is still a striker who provides almost 0 assists and mainly uses the right wing as a starting point. Once he gets the ball he instantly tries to find Ibra and then just run towards the goal behind the lines. Simple but he has scored as much as Ibra in the league and bagged 3 in CL.
So how has it turned out? They have gone from being one of the bottom rated sides in terms of possession with 45% when they played 4-4-2 to the third highest just a fraction below Barcelona and 3% below Bayern.
They have a higher pass accuracy than any team in the champions league whereas they were very mediocre last year, they are among the top in terms of shots on goal.
Their midfield consists of Motta, Matuidi and Verratti so a player like Matuidi forces Cavani out on the left. Their midfield is far worse than the possible trio we could use so I think it is a really good "what if" comparison for us.
The styles and quality of all their offensive players and ours are pretty identical. Not suggesting we should copy them as there are still slight differences that one has to consider. But it is still very interesting that we can make a good assessment on how we would look in a year if we switched to a 4-3-3 with both RVP/Rooney playing.
Lavezzi----Zlatan---Cavani
Nani----Rooney----van Persie
Good post, mate. It does seem a little mad, doesn't it? 442, obtain Cavani to go with Ibra, stop playing 2 strikers. Like you said, Ibrahimovic is better as a playmaker, but I feel ever since he's been a consistent, reliable goal-scorer (the 10/11 season at Milan, imo) most managers have preferred him leading the line & not free-roaming like at Inter - not that it has been proved a bad decision at any point so far, mind you. As soon as Cavani signed, I had figured they'd be playing Ibrahimovic just behind Cavani, if not having the both of them right up top - as you say, though, it seems what Blanc is doing at the minute is working.
Strange that you think their midfield is poorer than ours (not disagreeing, but because I can't imagine anything worse than ours
) - from the times i've watched them this season, those 3 have struck me as solid (Matuidi, Motta) & of big potential (Verratti, who I think will be a star) as a unit, but perhaps nothing very special at the moment, if anything. I'm probably not the best to judge though, as I will be perfectly honest & say I only watch PSG's league/smaller games for Ibrahimovic.
The problem there is that I don't think Van Persie will be able to fulfill that role in the way Cavani does, because he isn't as mobile - sure, he used to play wide in his early days at Arsenal, but Cavani effectively operates as a winger when PSG don't have the ball, often tracking all the way back and putting in a shift the way you will see him do in every Uruguay game. I think we'd waste his brilliant hold up play that no other member of our squad can offer (important in tough situations, like 12/13 vs Real in the first leg) & then we'd probably finish Hernandez's patience for good. All interesting stuff though, your suggestion about 433 would certainly be very strong and it does make sense as your idea means Rooney gets played in his best position, but ultimately I feel that our best XI has to have Van Persie leading the line, regardless of formation (strange, as I still rate Rooney above Van Persie, but the former is a little more versatile I believe).
Sorry to take this off topic, guys!
Really hope Moyes gives Nani more of a look in from now on - it's been said a million times already, but he really is a 'confidence player'. I genuinely feel that if he was given a run of games in the team, he wouldn't disappoint - on the contrary, he'd prove himself our rightful first choice winger (which should never have been in doubt anyways when you look at our wingers, but then again a top-form Nani could play for any side). His defensive contribution is really underrated too, so it's a little annoying when it's suggested that he is a liability against bigger sides - if anything, he's one of our best big-game players (just look at the Arsenal, City & CL games over the years).