Raul might be happy to stay but the club is looking to move him on because he might not fit the mould of what Bruno wants, for example Bruno wants 3 strikers, his main star striker, a target man to offer a different approach and a young striker in Fabio.
Raul would have to be the star striker as he isn't as effective at being a target man now he has to use the headgear therefore couldn't fulfill that role so has to be the star striker or has no place in what Bruno wants. If the club has identified someone to be the new star striker it leaves us with either shoe-horning Raul into the target man role or selling him to buy a more effective target man for example Ajorque at Strasbourg.
I love Raul but I could definitely see him moving on this summer to be a starter somewhere to retain his place in the Mexico squad. No idea who could perhaps come in to be the main striker maybe someone like Toney or Broja if we could find the funds for them but could definitely see someone like Ajorque coming in for about 10mil to be the target man option.