Morata was once the lone striker in the Spanish national team and that went well in my opinion, in terms of quality Morata is a player who is quite agile in his movements and takes up empty space.
I think Morata won't be a problem if he gets good support from the flanks or in the middle to score goals, Morata is the type of player who can be an executioner and can also be a good feeder for his teammates, for a striker he's not selfish and that's very good for the team.
Some contend that Alvaro Morata is overvalued in that regard because his goal scoring record over the course of his career has not been very impressive. Nevertheless it is impossible to ignore his capacity for making an impact during an assault. But it is still unclear whether Milan single center forward position would be the greatest match for him. Stefano Pioli the manager of Milan frequently uses a 4 2 3 1 style usually starting Morata as the lone striker. Pioli should think about using a two striker system so that Morata may flourish with a strike partner in order to completely realise his potential. Although Pioli has not commonly utilised this structure in the past Atletico Madrid success suggests it might be a strategic adjustment worth investigating.
I actually never like playing a single striker alone in the front. Unless he is someone like Robert Lewandowski or someone who is absolutely the best of the best. We all know that Álvaro Morata is not one of them “best of the best”. So I think it will be better if the coach actually plays another striker with him, so that they can play by complimenting each other on the field. Playing someone as the second striker might be the better tactic.
But of course, I am not a professional coach. He might be thinking of something which I don’t even know. But I strongly believe that 4-4-2 might be a better formation in this situation. By doing so he can also play around with the position of the four midfielders.