Some news sources started to say that Manchester United aren't interested in Harry Kane anymore. Because they find his cost too much to bring to the team. Actually Manchester United have newly been bought by a Sheikh so they would have a huge transfer budget to make their signings. But it looks like it isn't about affording him now.
They must be seeing it not very sensible to do. He is going to be 30 years old by the end of July so not every big team would be eager to spend 100+ million euros for him from now on. Of course he can still be productive for many more years but it is still a risk to take.
There are rumors about Mbappe maybe because Manchester United are starting to get serious about getting the French player, but has the transfer of ownership been carried out properly? because actually the issue about Man United is an issue about the owner
I don't know whether Manchester United can sign Mbappe in case there is an opportunity this summer. Because they wouldn't be the only team interested in him. Real Madrid would surely get into this race right away as they have been monitoring Mbappe for a long while. They are also in need of a striker now as this need has got bigger as of Benzema's departure.
Manchester United have got way richer than before certainly. But as long as Real Madrid present the same conditions on his contract I don't think Mbappe's choice would be the Red Devils. Because they haven't been as successful as Real Madrid in the recent years before anything else. Mbappe must be hungry for winning a Champions League title.