Ok, I hear you and lets say you are rigth... then why not testing the formation for more than just a few minutes in one game? Why try to make Illing a mezzala?
There could be many reasons not to test the formation in friendlies. Here's just a few.
- Friendlies, especially overseas, are more fitness tests than anything else. Getting players fit for the season. Tactics and formations (more on these later) are usually more taught and worked on in training. That reality also has its reasons: being secretive of tactics, wanting players to feel more comfortable so you work on it in 7v7 privately, player availability, etc.
- Formations in reality v formations in discussion are very different. You say it was only tested a few minutes in one game but is that reality? 3-5-2 already was operated like a 3-4-3 with the winger/wingback flexibility of Weah in both friendlies I watched multiple times. He would push forward and the rightmost midfielder (not a RWB or RM) would push further wide to support Weah. I feel like formations in chats and forums somehow take on this written in stone mentality when in reality and in practice its much more fluid. Just like how we played a three at the back at times last season but with Danilo as the right-most CB he could become more of a pseudo-RB in attack and we suddenly had a back four in attack as Cuadrado was more of a winger than a RB/RWB. Formations are not an all-or-nothing concept. Concepts of one can still be learned while operating in another.
- I want to emphasize again fitness and player availability. Maybe we had more wingers than could all play at the same time but Allegri just wanted Iling to get fitness so he picked him to play mid. It can be as simple as that. It's a friendly. It's not a training. And it's a friendly in America so its even less important. It's a glorifed marketing campaign to get your players facetime with a growing market. If you place any value on it more than that, I don't know what to tell you.
- Finally, in terms of Iling as a mezzala. There again could be many reasons and it really doesn't need to be that complicated. Iling could've just ASKED to do it. It's a friendly, iling wants minutes, Allegri probably want to give him minutes for fitness reasons and so iling could've just asked. Mezzalas already operate and drift wide from midfield. I mean, the word literally means half-winger. Hmm, now how does that apply to iling? Oh, I know, a winger. I mean, it can be that simple. Maybe Iling has shown the MOST improvement on-the-ball in training and him being tall and fast, maybe it was like "why not try him out?" I mean, again, they're in fucking the United States waving to fans and kissing babies. It's a media tour where they pretend to play serious. And they don't even really pretend much.
I think the dissonance is very similar to Twitter rumors. You're just taking too much at face-value and assuming the worst. It really could just be they wanted 14-16 people to all get minutes and Iling said "hey try me there coach" and so they fucking did. And? What's the issue?