Arsenal boss Arsene Wenger has told Shkodran Mustafi to forget about leaving in January.
Mustafi pushed to leave Arsenal over the summer and was close to joining Inter Milan.
However, a fee couldn't be settled and Inter were eager to revisit negotiations in January.
But Wenger has informed Mustafi he is not for sale and must see out the season - at the least - in London.
The Frenchman went with Mustafi for Sunday's impressive 0-0 draw at Chelsea.