Who says he should do that? When he's directly asked to comment on a young player's chances ahead of the season he could at least answer it and give the lad some confidence, rather than turn it around and make it look like he'll only have a chance if Seamus is injured.
I think a better answer would have been (to: "With Seamus injured does that give players like Patterson a chance ahead of the season?"): "Yes, absolutely. Of course we are hoping for Seamus to get back as soon as possible and we're hopeful he will be ready for the start of the season, but Nathan would have got his chance already last season barring injury, and we're very excited to have the opportunity for him to work alongside and learn from Seamus to give us great options at right back this season".