Applications/Entries are accepted by the Organisation on the basis of the double criteria of Team/Rider and the right to entry is limited to the participation of the accepted rider within the accepted Team’s structure during a given season. Whether the accepted rider wishes to move to a different team, or the accepted team wishes to substitute the rider, changes are only permitted if previously approved by the Organization. In any such case, additional Entry Fees may apply.
Source: MotoGP.com – Read Full Article Here