Bayern Munich sporting director Hasan Salihamidzic says the club are "keeping all options open" with regards to January signings.
Reigning champions Bayern are third in Bundesliga at the midway stage, four points adrift of leaders RB Leipzig after an indifferent first half to the campaign.
Hansi Flick has been placed in caretaker charge until the end of the season after replacing Niko Kovac in November and revealed last week he is after a new right-back.
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Bayern set off for their training camp in Doha on Saturday, though injured stars Robert Lewandowski, Javi Martinez, Kingsley Coman and Niklas Sule were all missing.