Mauricio Pochettino's side came from behind to win 3-1 at home as the Argentine head coach made 11 changes to the side which lost to West Brom last weekend.
Townsend believes the club management will have a selection headache after certain players impressed ahead of Saturday's north London derby against Arsenal.
Below are three players who are likely to give Pochettino a selection headache. Unfortunately for Andros, he doesn't feature.
Kane's cameo versus Forest will have been enough to prove to Pochettino that he is ready for regular first team football, despite being just 21 years of age. The Argentine head coach placed unbelievable faith in his Southampton youngsters at St. Mary's, and it's likely he is willing to do the same at Spurs
He scored in Wednesday night's Capital One Cup victory over Nottingham Forest, coming off the bench to effectively change the outcome of the match. The club had failed to net in five hours of football prior to this victory and his arrival proved the solution to this drought.
Kane is yet to score in the Premier League this season, despite making three appearances as a substitute. He has, however, netted twice in three Europa League starts, while displaying fine form for the England under-21s.
Summer signing Ben Davies has made a steady start to life at Spurs, but he is yet to make a Premier League appearance for his new side. Since his arrival on 23 July, Pochettino has opted to stick with English youngster Danny Rose.
Davies did well defensively against Forest and he worked extremely hard. Spurs fans would perhaps like to see him offering more in attacking sense; he often impressed with his efforts in the final third during his time at Swansea.
After the club's recent 1-0 defeat to West Brom, Pochettino could be tempted to switch around his back-four, with Davies a highly dependable option. With the first north London derby of the season against Arsenal looming, the Welshman could be thrown into league action sooner rather than later.
A long shot perhaps, especially considering the importance of Saturday's tie, but Mason could be trusted to provide much needed creativity in the Spurs central midfield.
Having replaced an uninspiring Benjamin Stambouli on the hour mark against Forest, the 23-year-old made quite an impression. He proved integral in the club's comeback, scoring a wonderful equaliser from distance and helping to make the second, before Kane's third.
After signing a professional content with Tottenham back in 2008, he has made just four appearances for the club. During this period he has enjoyed loan spells with Yeovil, Doncaster, Millwall, Leyton Orient and Swindon Town. Pochettino could be the man to give him a fair shot at White Hart Lane.