The 52-year-old manager revealed the recently promoted Tigers had a bid rejected for the Celtic striker but he does not expect to return to the Bhoys with an improved offer
The KC Stadium outfit are attempting to bolster their attacking options ahead of their return to the Premier League, but had an offer of around £4.5 million rejected earlier in the transfer window.
|6/5||Hull are 6/5 with Coral to stay up next season
"We had a bid for him rejected and I can't see there being any change in that," he told BBC Radio Humberside.
"We've got other irons in the fire and we hope that we can get one or two strikers in before the start of the season.
"It's obvious that we struggled to score goals last season so that has got to be the aim for us. We've still got six weeks before the season starts and we're actively looking."
Hull will compete in the English top flight next term after finishing second in the Championship in 2012-13, and have already bought in five new faces including Maynor Figueroa and Alan McGregor.