Molineux still has a concert licence. However, you are looking at the bigger acts to fill it and there is little enticement to use a 30k-40k gig including general standing in Wolverhampton when many big acts are doing Wembley, Etihad, Anfield. Everton want concerts at their new stadium but Anfield will have way more pull. Similarly, Villa Park has a concert licence 15 miles down the road with bigger capacity.