Two problems? Eh ? All you mentioned there is your opinion is different to mine which is fine, a bit pretentious to use the word problem like yours is correct and mine is not, football is a game of opinions, none of us have crystal balls and we football fans are usually always wrong,
1. Ten-Haag if i was to guess going from past records is more likely to stay at a club longer than Conte, the proof is in the pudding there, just because i agreed with the poster i didn't specifically mean 5+ years
2. Ten-Haag who i believe would be a better fit as a manager for Manchester United is not available now and yes hypothetically could be available in the summer which I think if we come calling he would accept, even if he wasn't i don't want Conte.
Ironically in your comments, your logic is also using hypotheticals