Queens Park Rangers have already signed Conor Washington in the January transfer window.
QPR sold Charlie Austin to Southampton earlier in the month, and they have reinvested some of that money by signing Conor Washington from Peterborough United.
However, Hasselbaink has hinted that Rangers are set to continue to spend in the near future, as they look to make further additions.
"We are looking (to do more business)," Hasselbaink commented. "It's not easy to get the right individual, but we are looking."
QPR are said to be close to agreeing a deal for defender Marco Motta by West London Sport.
Motta, it appears, could be the first of a number of arrivals at Loftus Road in the coming days.
QPR have also been linked with Chelsea striker Patrick Bamford in the Daily Mail, although that deal will be a tough one to complete.
Bamford has a number of Premier League sides tracking him, but QPR are still reportedly hopeful of signing him on loan.