PG13 will probably stay this time around, I can't guarantee it but I do not see anything much more marvelous in his career from here on out for the next 5 years. However clippers may decide to trade him if they can find someone to take it in the later stages of the contract. Both parties have done this before and parted ways, Clippers gave Blake Griffing a 5 year contract and then send him to detroit not even a full year later, and PG13 had a huge contract with OKC and requested trade as well, which somehow didn't even effected OKC that much because they still went to first round even without PG13 and westbrook.
So, what we have is 5 year contract but two parties that never cared for it. Let's see if things will be different this time around and will they keep their promises this time.
Their real journey will start this season, with a new coach, hopefully they'll have more success together.
IMO, this is the best team PG have played and with Leonard, he has a chance to win an NBA Championship which is a dream of a star player to cement their legacy.
He was given a chance this season, if he will not improve and management will not see their expectation, a trade is possible because it means he does not fit with the team.