The Welsh winger has been in scintillating form for Spurs this season, already scoring 17 goals and hauling Andre Villas-Boas' side out of trouble on more than one occasion.
Allardyce saw his side lose 3-1 at White Hart Lane in November, with Bale's name on the scoresheet and a Jermain Defoe brace proving enough for Spurs to take the points.
Although Allardyce is aware of the numerous attacking options at Villas-Boas' disposal he knows Bale is more than likely the man who can inspire Spurs to get a result.
"They've been very good," the 58-year-old said of Spurs' season.
"The team from an attacking point of view has been outstanding, Recently they've lost their leading goalscorer, who is Jermain Defoe, and (Emmanuel) Adebayor has been away at the Africa Cup of Nations, so from a goalscoring point of view they've had to rely on one man and one man only to come up with the goods.
"That's Gareth Bale and he's been the major difference between Tottenham and the teams they've played recently.
"Not only has he scored very important goals, but they've been stunning goals at that. He's going to need some looking after on Monday night."
- Sports & Recreation
- Jermain Defoe
- Gareth Bale