He was reluctant to give a specific timeframe on Dominic Solanke's return, and said Lucas Bergvall is a doubt for Sunday's match.
When asked about Tottenham's away support chanting "boring" during Thursday's draw against Brentford, Frank gave a long and detailed answer about the current situation with his side.
On what needs to improve offensively: "There is a few things we need to improve on and one of those is losing the ball through unforced errors, which happened 25 times [against Brentford]. I showed those 25 clips to the players today."
He continued: "Football is a game of mistakes. You lose the ball - that happens - but if half of those can be better, it will provide more attacks. There was at least five good counter-attacks [against Brentford] where a better touch could [leave us] three versus three and the game looks more lively and open."
Frank said that "patterns, structure and getting in the right positions" also need to be addressed, which he and his coaching staff take full responsibility for.
When asked what he sees as success this season and beyond: "What I am 100% [sure] will happen is that we are able to score a lot of goals and be much more dominant. With the current situation, where a lot of the top players are out and we are playing a lot of games, it makes it more tricky. We need to manage everything between that with small steps every day."