Maybe more a WWYD so sorry if this isn't the right place to ask this.
We are moving house soon, to a completely different area about 6 hours away. We've been at current place for about 4 years, lovely neighbours. We have 2 very noisy and active boys, one at school and one preschooler. Our cat spends a lot of time next door, getting away from the noise I expect. We don't mind this, have joked with the neighbours several times that he's their cat too. They feed him sometimes and do love him. I'm of the opinion that as long as he is happy then it doesn't matter if get shares his time between houses, the neighbours checked a lot that this was okay at the beginning and still make sure occasionally.
I know the cat doesn't get the attention he would love from us and that the boys are too noisy for him. When we move he won't have the neighbours as a bolthole. Would I be unreasonable to ask the neighbours if they wanted to keep the cat when we move? I'd miss him a lot but think he may be happier.