The player will continue with the recovery programme [originally] laid down and his progress will dictate his possible availability for forthcoming games.<br/><a href='http://www.sportsmole.co.uk/football/barcelona/champions-league/news/barca-no-messi-injury-relapse_78979.html' target='_blank' rel='nofollow'>http://www.sportsmole.co.uk/football/barcelona/champions-league/news/barca-no-messi-injury-relapse_78979.html</a><br/>What's the meaning of "dictate" in this sentence?