I think he means they are okay for the odd game a season as emergency cover but not yet ready to be permanent members of the first team. Probably true but it relies on our CBs conveniently getting short-term injuries at different times - perhaps they could talk over diaries. Perry to Svensson "I'll strain a calf on January 9th but will be back in light training by the 17th." Svensson to Perry "Good my twisted ankle doesn't start until the 20th"...