He represented Poland 24 times at u21 and younger, so someone thought he had abilities at least on a par with his peers in Poland. Presumably, someone at Rangers also thought the guy had ability or why sign him. The issue here is what went wrong and why. There's no doubt he has lost his way and it may or may not be recoverable but, since none of us appears to know what actually went on, I see no reason to believe MB shouldn't try.