Away from domestic business for a minute, Celtic have a major problem coming at them that will need to be addressed before the start of next season. That’s according to Kenny Dalglish. The former Celtic hero was asked what he thought about the news of Joe Hart retiring means for the club and whilst Dalglish admits he was surprised, he does say that he would have tried to persuade the veteran ‘keeper to stay on at the club. Dalglish said [No Tippy Tappy Football], “I’m surprised that he’s retiring. He’s only 37. It’s not as if he runs about a lot. And playing at Celtic the biggest trait he need…