"After the way we played in the first half I was frustrated," he told Sky Sports 1. "In the second half we got good opportunities but we couldn't nick a goal.
"We didn't play well and Southampton have been playing well. I've been to see them a couple of times and they continued that form, particularly in the first half.
"I've got to say I thought their team did really well. I give Nigel (Adkins) a lot of credit. I saw his team play at Chelsea and they were excellent. Now there's a new manager taking over the reins and they've played well."