While winger Daniel Podence impressed in a more advanced role in Monday’s 3-1 league defeat by Manchester City, Nuno said he still wanted to strengthen up front.
“It’s about having a squad with solutions,” Nuno said.
“We feel that the players performing in that position on the pitch give us a lot of quality but at the same time we need to improve so we can be more clinical in the final moment.
“Before the transfer window closes we must improve our squad … we must balance it better, we’re working on it.”
Wolves, who saw experienced defender Matt Doherty join Tottenham Hotspur during the close season, have already signed Matija Sarkic, Fabio Silva, Fernando Marcal, Vitinha and Ki-Jana Hoever and have also been linked with a move for Barcelona defender Nelson Semedo.
The transfer window close on 5 October.
Nuno’s side travel to West Ham United on Sunday.