On Farke's health, Riemer said: "He is ill, didn't sound too good but I am pretty sure he will be alright [for Monday]."
In terms of team news left-back Gabriel Gudmundsson will be out for this week and the club will "need to assess him on a daily basis". Forward Noah Okafor picked up a calf injury, damaging his right calf after the FA Cup exit and then his left calf after the match against Burnley.
There is hope Pascal Struijk will be available as he was training with the team again on Friday.
On Okafor, Riemer said the forward is "getting settled with a great bunch of players" and is the type of player that needs to "feel comfortable" at the club.
He said midfielder Anton Stach is a "special player", adding: "He manages to play in the pockets. You can also see he can hit the ball with left and right foot."
Riemer spoke about his role with Farke: "We've worked for a long spell so I think I'm a traditional assistant. I do set-pieces as well. We always have discussions in the manager's office and sometimes heated debates, 100%. He always wants to hear opinions then makes up his own mind and his own conclusions."
On securing safety from relegation, Riemer said it will be "massive", stating: "If you see our previous seasons, it seems like every season has to be special to achieve what we want to achieve. Usually you talk about points per game and how it might not be enough. Now we are on 43 it's truly something special. With three games to go, I think in the form table we are the second best, it's massive. Credit to the players."
On playing Tottenham on Monday night: "It will be a huge test. Spurs will go for it, the manager has managed to get them out of relegation places so we need to be up to it and maintain our top form. It is the best form we have been in all season. We want to finish the season on a high and as soon as possible, seal it mathematically."
On Spurs manager Roberto de Zerbi's impact at the club: "It is not for me to judge from the outside but he has an impact on the players, they follow what he says, what he wants to do. He gives them confidence. You see his patterns coming through, week to week, and results help. They're getting the confidence. It's becoming a different Tottenham than before."