The Sunday Mirror reports that Bruce will step up his interest in the duo this week.
Birmingham winger Larsson is available on a Bosman, while Campbell has a £1million buy-out clause in his contract.
The Black Cats face competition from a host of Premier League clubs for the duo.
What is your opinion? Feel free to discuss the article under. You have to comment by using your Facebook profile. Be fair and have respect for other people and opinions!
Being an amiable guy is good for you and Jurgen Klopp is living proof.
Summer 2016 is set to be a very exciting time for football fans, as this is when the long awaited Euro 2016 tournament kicks off.