Chelsea are launching a bid for Brescia midfielder Sandro Tonali.

The Sun says Blues boss Maurizio Sarri is chasing Italian teen sensation Tonali - and will blow Serie A's giants out of the water with a £20million offer.

Sarri sent his scouts out to watch the 18-year-old Brescia midfield star again this week during the 4-1 win against Padova.

Tonali has lit up Serie B with his performances and Juventus, Roma, Inter and AC Milan are all chasing his signature.

Sarri is a long-term admirer and wanted Tonali at Napoli a year ago, but a big Chelsea offer would put them at the front of the queue in January.