He’s like Ronaldo. His output in terms of scoring will always be ok but does he make cork a better team overall? No. He’s so slow and just doesn’t work very hard. He probably can’t. He’s also started missing simple chances he’d never miss before.
It is why team selection is so difficult. It’s about creating the best team not just picking the best players. See Brazil 2006 World Cup v France or the England national team under SGE.