urnley midfielder Chris McCann is to see a specialist next week about the niggling knee injury problem that has curtailed his pre-season.[LNB] McCann, who missed a large chunk of last season with two knee injuries, is currently undergoing treatment for a knock sustained during the Clarets' tour to Singapore.[LNB]He has been out of action since and boss Brian Laws is keen to get a second opinion on the problem, with the new campaign just days away.[LNB]Laws said: "We can't really put a finger on what is exactly wrong with Chris until he sees the specialist and he looks at the scans.[LNB]"Let's see what the outcome is when he sees a specialist next week, just to make sure that he's happy with everything.[LNB]"He is still in training and still working hard. We're just keeping him out of the contact zones with other players."[LNB]Michael Duff, meanwhile, believes Burnley's squad is stronger now than when they won promotion two seasons ago.[LNB]The Clarets reached the top flight via the play-offs in 2008/09 and are gearing up for another promotion push after relegation last term.[LNB]Laws has signed Ross Wallace, Chris Iwelumo, Dean Marney and Lee Grant, making Burnley among the favourites for promotion with bookmakers.[LNB]Defender Duff said: "This squad is definitely as strong, if not stronger, than two years ago.[LNB]"We played 11 versus 11 in training this week and both teams could do well in the Championship, so hopefully that shows we've got strength in depth in the squad.[LNB]"Hopefully we can do well because there is certainly great competition for places right throughout the squad."