Disagree, he's a large part of it. We sadly hung our hat on him and every single season he let's us down whether it's a blistering start and then checking out half way through the season, or, being so unfit he literally cannot run.
We've shown him loyalty, gave him regular improved contracts, extra time off, accommodated his international jollies, made him our top earner (until recently) and he takes the utter piss.
If the board are even considering improved terms, then they someone needs to have a word. You simply cannot reward his conduct / behaviour.
Time to move on.