The competition between Barcelona and Real Madrid will be highly anticipated because Real Madrid has yet to find a striker to replace Benzema. Although Real Madrid have signed Joselu so far, he does not appear to be the right answer to replace Benzema well. So I think next season is a good opportunity for Lewandowski if he still wants to maintain his top scoring streak in La Liga.
Joselu to substitute Benzema then statistically will be much different. Especially when compared to Lewandowski as opposed to rivals from Barcelona but we never know how Joselu on the pitch with Real Madrid at least he can see as a striker who has to replace Benzema and it is not an easy task for Joselu but I hope he finds the best way with Real Madrid.
I know that Real Madrid will not be coming for another striker unless they wait for Mbappe to come next season, so maybe that will be the next priority even though Mbappe is not the right one in the central striker position.
So the two great La Liga teams Barcelona and Real Madrid will be very competitive again in La Liga, especially the Champions League.