Although faced by former county colleague Shane Maher, Callanan was immense, scoring ten points.
With his side reduced to 14 men following the dismissal of Liam Ryan on the stroke of half-time, Callanan took charge.
An early David Butler goal settled a struggling Drom but Stephen Murray’s 15th minute goal from a 20m free had Burgess ahead 1-4 to 1-2. Veteran Seamus Butler netted for Drom in the 20th minute and though they lost Ryan, they were still ahead 2-6 to 1-7 at the break.
Burgess were relentless in the second half. With Stephen Murray accurate from frees and play, they were level as the game went into injury time. Drom were awarded a free on their own 65m line which Callanan stroked over to book his side’s place in the last eight against Toomevara.
Holders Sarsfields, six points behind in 20 minutes, defeated Kildangan 2-20 to 1-15. Eoin Gleeson’s 15th minute goal helped the losers lead 1-9 to 0-6 by the 24th minute. But Sarsfields, with Pa Bourke and Larry Corbett to the fore, reeled off six unanswered points before the break to level the game at 0-12 to 1-9.
Ritchie Ruth netted for Sarsfields and he grabbed a second goal in the 53rd minute to put Sarsfields nine points clear (2-17 to 0-11).
Sarsfields, who were without the injured Michael Cahill and Denis Maher, meet Loughmore-Castleiney in the quarter-final.
Stephen Lillis, Padraic Maher and sub Johnny Enright were others to shine for the holders, while Ruairi Gleeson, Eoin Gleeson, Daragh Egan and Joe Gallagher were Kildangan’s best.
Éire Óg, Nenagh booked their quarter-final place against Clonoulty-Rossmore with a 1-17 to 0-14 win over Cappawhite at Newport. Outsiders Cappawhite, with Jerry O’Neill in top form, asked plenty of their rivals in a tight first half, and led 0-8 to 0-7 at the break.
In the second half, Nenagh were the better side and with county U21 man Michael Heffernan, grabbing their goal, they ran out comfortable winners.
Nenagh’s best were Paddy Murphy, Hugh Moloney, Sean Geaney, Daire Quinn and can raise the tempo for their clash with Clonoulty.
The last fourth round game, Borris-Ileigh v Carrick Swans will be played at Semple Stadium, Thurles, tonight (8pm) with the winners facing Mullinahone in the county quarter-final.
The four county quarter-finals will be played at Semple Stadium next weekend.