He’s a professional cyclist who is paid to ride on the equipment the team gives him. If he’s not happy with that, then don’t sign for the team. It’s not like he was surprised by a change in equipment sponsorship after signing for them, presumably for a lot of money, less than a year ago.
Except that professional cyclists can have exception clauses in their contracts. It's also not like everything that happens at work is detailed in people's contracts. You've never had a contract for a role that was misrepresented or turns into something else entirely?
He’s a professional cyclist who is paid to ride on the equipment the team gives him. If he’s not happy with that, then don’t sign for the team. It’s not like he was surprised by a change in equipment sponsorship after signing for them, presumably for a lot of money, less than a year ago.