They would be really dumb to do that. Wait for one season and then make a bid. He played good for less than 4 months I think. 30M understandable, but almost 70M?!!! They could get lacazeta for much less than that.
United built their 90s and 00s teams with buying English players, British players and players from Scandinavia who were already proven in the EPL.
They weren't buying Brasilian, Argentine, Italian, Spanish and similar players (until early 00s, when most of those signings failed, except CR7).
So, imo, they are trying to get back to the roots with buying (more) English and British players.
In that sense, Harry Kane could be a new Rooney, and for them, much more attractive than French, Brasilian or Argentine Fcs.