Ben Simmons will be on a new number (10) this season in the Brooklyn, Ben Simmons had been on number 25 all through the beginning of his career, i think the reason he will be on a new in the Brooklyn is because 25 is not available for him. This also the number is fathe wore all through as a basketball. Can Ben Simmons be able to cope with this number that seems new to him at this point of his career?.
I don't think the jersey numbers is significant though, even the GOAT himself hs two jersey numbers the famous 23 and then 45.
Still boils down as how he is going to perform in Nets uniform. We haven't see him this season because of the obvious drama with the Sixers, but since the trade is official already, he can start with a new left with the Nets although not sure what will be their chances this playoff since Durant is still recovering.
I think it was because he came back to the game after doing some baseball experiment and his number was taken and that is why he went with number 45 for a while. As soon as it was available, he switched back to 23.
However, if we were to talk about greats of the game having 2 numbers, Kobe never even switched teams and still changed his number from 8 to 24 so it should not be really a big deal for anyone else, we all know Lebron has 23 and 6 as well which was used in multiple places in multiple times. So, I would guess that changing your numbers is not a big deal for many players, and it should be fine in this case as well and not a big deal.