Spurs chairman Daniel Levy has been heavily criticised for approaching Ramos while Jol was still in his post, and for telling the Dutchman Tottenham had to qualify for the Champions League.
Mills said: "We have a new management team in place and I think they are an exceptional team.
"No targets have been set. Of course as a club you want to win competitions and that's what the management team will be focused on.
"I had dinner with them on Tuesday night and they know exactly what they are going to do, they had a real sense of purpose.
"For them to get themselves established is going to need weeks and months but Daniel and the rest of the board are very confident."