Prime Minister Muhyiddin Yassin is in talks on a possible cabinet reshuffle in an attempt to appease a key ally that has threatened to pull support for the ruling coalition, three sources said on Monday.

Muhyiddin is facing a premiership challenge from opposition leader Anwar Ibrahim, who last week met with the King in a bid to prove he has majority support from lawmakers, including from among government turncoats, to form a new government.

The prime minister has since entered fresh discussions with Umno...