There are still rumours that Real want to sell Vinicius as early as August, which means that Alonso still sees that there is no good link between these players, so there is no point in trying to build something further around them. Although last season I didn't notice any conflict between Mbappe and Vinicius, they worked well together and brought victories to Real Madrid
The was no "conflict" because for some good parts of the season the did not play together due to injuries but whenever they would play together, one of them would not shine as the left-hand forward side is a favorite one for both.
Joking aside, as long as PSG keep up the good work it won't really be easy to prevent them from a back-to-back title.
I don't think they will lift a back-to-back title. That is too much to ask. After getting exposed by Chelsea, wait and see how teams will come at PSG this coming season. That fear factor they had is now gone!
I think xavi Alonso will be making a big mistake if he should count vinicius out of he's plan after planning to sell Rodrigo I don't really think it's a wise choice, mbappe and vinicius in that front line is a very big threat and now he wants to let him go believe me he will surely regret it, and in as much I still don't see Real Madrid to competitive for anything in the Spanish league, and I'm still seeing Paris Saint Germain to be the favorite of lifting the UCL back to back despite their lost to Chelsea in the FIFA club world cup I still find the worthy because they really prove themselves in almost all the tough European giants and I believe they can still do it.