Celtic are stepping up their pursuit of Scunthorpe United striker Gary Hooper.
The Daily Mail says stand-in manager Neil Lennon has identified Scunthorpe's Hooper as a leading candidate and made personal checks on the 20-goal forward.
Wolves, Wigan, Coventry and Ipswich have also watched Hooper, but it's understood Celtic and Derby have been strongest in their interest so far.
The 22-year-old has a year left on his contract and has seen his value rocket since making a £175,000 move from Southend in July 2008.