You seem to now have changed your argument!!
Injury prone players are a risk. We got Vicente cheap probably because of his injury record but Hoskins had played 43 games the previous season and CMS was hardly injury prone until he came to us. Buckley played 39 times the previous season for...
That's irrelevant. Poyet was able to purchase players and, like all managers, has to live with contract terms such as the appearance trigger. Can't use it as a defence.
That's hardly unusual and applies to lots of clubs and players. Look at the row about Guitierrez at Newcastle. Besides, we signed Buckley, CMS, Hoskins and some chap from Spain called Vicente