Rovers manager Sam Allardyce knows that he has to strengthen up his attack before the start of the season after losing Roque Santa Cruz and Matt Derbyshire in the summer.
It now seems that Blackburn are closing in on the capture of Argentine attacker Di Santo.
The 20-year-old joined Chelsea from Audax Italiano in 2008, he has made 16 appearances for Chelsea but has failed to find the net so far.