The Lilywhites defied their recent Premier League performances to stun Eintracht Frankfurt 1-0 in Thursday's Europa League quarter-final second leg, where a Dominic Solanke penalty sealed a 2-1 aggregate triumph for Postecoglou's side.
What happens in the Premier League is largely trivial for Tottenham now, as the Lilywhites are in a lowly 15th place in the table, a whopping 11 points adrift of the top half.
Here, Sports Mole rounds up Tottenham's latest injury and suspension news ahead of their clash with Forest, who remain on course for Champions League qualification in fourth place in the standings.
James Maddison
Status: Major doubt
Type of injury: Hip
Possible return date: April 21 (vs. Forest)
James Maddison was wiped out by Frankfurt goalkeeper Kaua Santos on Thursday evening - an incident which won Spurs the decisive penalty - and initially managed to play on before calling it quits with an apparent hip problem.
However, Postecoglou affirmed at full time that the Englishman was "fine", so an appearance at the City Ground cannot be ruled out.
Radu Dragusin
Status: Out
Type of injury: Knee
Possible return date: Unknown
Romanian defender Radu Dragusin sustained a serious ACL injury at the start of the year, and he is fighting an uphill battle to play again before the end of the calendar year.
Son Heung-min
Status: Major doubt
Type of injury: Foot
Possible return date: April 21 (vs. Forest)
Son Heung-min was missing from the ranks against Frankfurt as he manages a foot injury, one that has been giving him grief for a couple of weeks, and his availability for the weekend remains uncertain.
TOTTENHAM HOTSPUR'S SUSPENSION LIST
Tottenham have no players suspended for this match.
Written by
Ben Knapton