The Bayern coach admits that the economic implications of the coronavirus pandemic have made it "very difficult" to bring in big-money signings and revealed that the German champions won't be dipping into the market this month.
Flick said: "Let me be very clear about this: the current situation affects all clubs in the world. It's not an easy situation with corona. I'd like to be clear: I don't want to demand new players. I know the situation at Bayern Munich; I know it's very difficult at the moment.
"The squad we have here at our disposal is the squad we'll have until the end of the season.
"I'm not sure if one or two might still transfer. There are certain things that have been talked about, but currently we have very good quality in our squad and I don't think our goals are in jeopardy."
Bayern currently sit top of the Bundesliga as they seek to retain the league title but Flick believes his team's defending needs to improve as they have conceded 21 goals in 14 matches.
He explained: "We have to work on that. It's not about the defence in particular. It's conceding no goals, keeping clean sheets, defending. In order to do that you have to have a compact defence and order and organisation with which you pressure the opponent and that's what we have to improve on."