While handing out the ban and fine, the Football Association said that Arsene Wenger accepted his abusive language and behaviour which was improper and questioned the integrity of the match official Mike Dean.
Arsene Wenger's side is coming off a 2-2 draw with Chelsea at home.
The third round of the competition marks the introduction of England's top teams to the competition. Caretaker boss Gary Brazil will have to massively up the ante for Forest to have any chance of knocking out the cup holders in the third round. "So we have four days between Chelsea and Forest so that is [not] quite ideal and after it will be shorter between Sunday and Wednesday but after we have four days again so I can rotate in a little bit in a soft way".
Aaron Ramsey remains out with a hamstring injury and Granit Xhaka has been ruled out with a groin problem so Jack Wilshere is nearly certainly going to be rested this weekend after starting our last six games.
Sead Kolasinac (ankle), Aaron Ramsey (hamstring), Olivier Giroud (hamstring) and Nacho Monreal (ankle) are all out.More news: ESPN personality reprimanded for vulgar Trump insult in television interview
The seven-goal striker missed the goalless draw at Leeds on New Year's Day with a knock sustained during the defeat to Sunderland, which proved to be Warburton's final game as manager.
Arsenal have twice eliminated Nottingham Forest from the FA Cup, in 1978/79 and 1992/93 - they went on to win the trophy in both of those seasons.
"I am concerned about Arsenal here", Nicholas told Sky Sports.
Attack: Mesut Ozil and Alexis Sanchez are expected to be rested while Alexandre Lacazette should also be given a breather after starting throughout the festive period.
"We had a normal training session today and the players have been bright and noisy, which is a good indication they're happy, so they got on with their work".