Absolutely this.
I can't get the Salah apologists quoting historical data. What relevance does that have to next season? None.
He's 32 years old in a couple of months.
Has clearly been in decline (and who is to say more injuries, with increasing age, won't be become de riquer for him, this season could be the new norm)
Has only scored 17 goals (12 without penalties, who anyone can take) in the PL this season.
There will be a total change in the Summer : manager, tactics and for Mo. surely more benchtime from a manager without the same emotional connection.
Compare that to say Olise at 22 years old.
In a revamped team I'd rather we look to the future and players who can give us another 3-4 years in the first team than someone who can't and would likely be on the bench, after next season, more often than not, and would likely leave on a free the season after (losing us the money to buy someone like Olise on an effective free at £60-70m).