Spurs Chat podcast member Chris Cowlin says Thomas Frank as the Lilywhites' manager "simply wasn't working" despite initial hope.
"When Thomas Frank was appointed, I thought he'd bring a calmness, defensive qualities and a tactical versatility," Cowlin told BBC Sport.
"He played 17 different formations for Brentford last season. Spurs thought they were getting a flexible manager who would improve players.
"This is not all on Frank – the board need to deliver depth in transfer windows.
"And the players at the moment look beaten before we start the game, the body language doesn't look right.
"Frank as Spurs boss – it simply wasn't working. Someone is going to come in and give these players confidence and put some energy back into Tottenham.
"Hopefully we can climb up that table."
Tottenham are sixth in Premier League and five points above relegation zone.
