The current free-agent has lifted the lid on how his own immaturity ironically led to his inclusion Celtic's first team match day squad.
The Scotland international stole the headlines with a stunning winner in Celtic's world famous 2-1 victory over Barcelona in 2012.
Watt joined Celtic seven years ago and has had six different clubs since leaving Parkhead in 2014.
Tony Watt praises former Celtic mate and Saturday's hat-trick hero James Forrest on Twitter.
Graeme Murty’s Glasgow Rangers have brought Jason Cummings to Ibrox, and former Celtic winger David Provan has a warning for him.
Graeme Murty’s Glasgow Rangers will face Old Firm rivals and Brendan Rodgers’s Celtic at Celtic Park in the Scottish Premiership this month.
Celtic's James Forrest is developing into a classy player for the Hoops.
Celtic held aloft the Betfred Cup final on Sunday after beating Motherwell.
Ibrox club Glasgow Rangers lost against Dundee in what was the second successive defeat for Graeme Murty’s side. Former Celtic duo Tony Watt and Darren O’Dea react.
Watt left Celtic Park permanently three years ago.
Signing on loan to Hearts from Charlton Athletic represents an opportunity for Tony Watt to kill off bad accusations from an image problem, first formed in Scotland.
Charlton Athletic's 22-year-old is reportedly due to move back to the Scottish Premiership this season.
Charlton boss Bob Peeters has confirmed a deal is close to sign former Celtic striker Tony Watt.