It seems like Osimhen is really going to Saudi Arabia... There was a recent update that Al-Hilal managed to convince him. I think this is really bad for his career. He is still young. Of course he will make lots of money but he would be less attractive to big teams when he returns to Europe. 
Hopefully she won't regret going to Arabia too early. If he can prove he can do well there, I think he will continue to earn a lot of money. At 26 years old he's still very capable of competing in all European leagues at the moment.
Other taht after getting Cunha, United immediately shifted focus to Bryan Mbeumo. The Brentford winger scored 20 goals this season. Man United has made Bryan Mbeumo an offer. Arsenal, Newcastle United, and Tottenham Hotspur are also keen on him but Mbeumo has chosen Man United. The current problem is that the bid of £45 million plus £5 million in addition was rejected, Brentford wants £60 million.
Source: https://www.express.co.uk/sport/football/2065555/man-utd-transfer-news-bryan-mbeumo-tottenham-ange-postecoglou-thomas-frank