Real Madrid must have a summer clear out of their squad if they're to scale the highest of heights once again.
That's the view of many football pundits and commentators, including Sky Sports' Guillem Balague, a long time friend of recently-sacked Real manager Rafael Benitez.
One Champions League, one La Liga and two Copa Del Rey's is all that Los Blancos have to show for Perez's second term in charge of the richest club in the world - a problem that significantly pre-dates Benitez's tenure.
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Assuming Zinedine Zidane is given the money to make the role his own and he too acknowledges the need for fresh faces, who are the likely players to make way?
Let's take a look at three potential departures.
It's abundantly clear that Jorge Mendes, Ronaldo's agent, is doing his utmost to keep his client in the Spanish capital, perhaps aware of an impending parting of ways.
Looking at things objectively, though, Ronaldo no longer performs against the bigger sides in Europe or La Liga - and the statistics reinforce that fact.
Yes, he's scored a hatful again this season but, with the greatest of respect, Malmo, Shakhtar Donetsk and Espanyol are far from elite sides.
He's fallen woefully short in a number of big games, most notably in El Clasico where he was completely anonymous.
Whilst they can still command a world-record fee for him, Madrid would be foolish not to accept offers, especially given the common knowledge that they want to build a new generation of players around Gareth Bale.
The World Cup winner has been largely anonymous for long periods, perhaps as a result of non-stop playing for the last couple of years.
With the emergence of Casemiro as a wrecking ball of a defensive midfielder, the German's days could be numbered.
Real have enough players in the side able to play an incisive pass; what they need is a player capable of mopping up behind the marauding Luka Modric and recycling the ball - something Kroos simply hasn't done.
Liverpool are reportedly interested in his services and a new start for both player and club could be just what the doctor ordered.
Isco has cut a forlorn figure at the Bernabeu for some time now; even when he managed to get a run in the side, it was always for the shortest of periods.
A player of such outstanding quality shouldn't become a benchwarmer, but that's exactly the situation the Spaniard finds himself in.
Even when Real were struggling against Valencia on January 3, Benitez opted to play Mateo Kovacic instead - a player who, whilst talented, is far behind Isco in his development as a player.
The Spain international has hinted he wants out, and unless Zidane recognises his undoubted talent, expect Manchester City's Manuel Pellegrini to make an offer.