The 19-year-old defender has been tipped for a bright future in the game, and after successful loan spells at Rotherham United and York City in 2012/13, is expected to make a first-team breakthrough at Ewood Park next season.
However, Spurs boss Andre Villas-Boas has been credited with an interest in bringing O'Connell to White Hart Lane this summer, having received favourable scouting reports on the England U19 international during recent appearances for the Young Lions side.
A left-sided centre-back by trade, O'Connell would be regarded as 'one for the future', with the potential to be loaned back to Blackburn to continue his development in the Championship in 2013/14, with first-team football highly unlikely in north London for the time being.
With Jan Vertonghen, Michael Dawson and Steven Caulker all established first-team stars, Tottenham are expected to sign a centre-back following the release of William Gallas. But, fans should expect a higher profile name to slot straight into the senior squad, even if O'Connell's acquisition is completed.
The likes of Newcastle United, Aston Villa, Swansea, and Premier League newcomers Cardiff City are also believed to be monitoring the talented teenager's situation, and could make rival bids for his signature.