Sunderland boss Steve Bruce has confirmed he is not giving up in his pursuit of Wigan Athletic midfielder Lee Cattermole.
The Latics have rejected an offer for Cattermole from their Premier League rivals and insist the 21-year-old is not for sale.
However, it is understood the Black Cats have now increased their bid to £6million in an attempt to convince Wigan to sell.
Bruce signed Cattermole for Wigan from Middlesbrough last summer and the England Under 21 international impressed during his debut campaign.
He remains a target for Sunderland, with Bruce hoping a deal can be agreed when chairman Niall Quinn is back on the case.
"The bid was knocked back, but when Niall Quinn comes back in two days we'll see if we can make it happen," said Bruce in the Daily Mirror.
"I've not given up.
"We all know money talks and I've made it obvious with the bid for Lee that he's a player I like."
Bruce has already signed Fraizer Campbell and Paulo Da Silva in the past week, and is also keen to agree a deal for Portsmouth striker Peter Crouch.
And he is unlikely to stop there in his recruitment drive, adding: "I have six targets which I gave the chairman a few weeks back and I've not wavered from those at all."