The Daily Star says Rovers have been monitoring the situation and boss Steve Keane is said to have made an offer for the striker.
Sam Allardyce, who was Rovers manager at the time, said: “Both players were keen to come to Blackburn, not just to play in the Premier League but to link up with their great friend Michel Salgado.
“I had used Michel to set up the deal and, as far as I was concerned, it was all agreed – then the chairman, John Williams, got a bit frightened of it.
“I was very disappointed at the time but that’s life. When you are with a small club with a small budget, those things happen.