Sinclair wasn't much and Maicon was basically free, plus both were signed as backups to other positions/squad players. Garcia was £16 million and signed in a position they've been looking to upgrade, but he's not been able to dislodge Barry and he's not been as good as De Jong who they sold for less.
Weighing it up I think he's near enough the worst of the season, but DXM is right that I had forgot Samba.