Ray Houghton believes Bayern Munich have frailties which may ultimately hamper their Champions League bid.

The former Ireland midfielder joined us on Off The Ball to analyse the German champions' 6-1 thrashing of FC Porto tonight.

Although he was hugely impressed by the manner of their victory, he did point out a few issues of concern for Pep Guardiola.

"Going forward they look threatening but looking at Rafinha at right back and the two centre-halves, neither of them are quick if you're playing against Barcelona with the likes of Neymar, Messi and Suarez," he said.

"Even in midfield, Xabi Alonso's got no legs, although positionally he's brilliant. But if you had someone in that area of the field who's going to run constantly, it might be a bigger problem for them."