Is Rekha not doing Umrao Jaan sequel ?

Though director Muzaffir Ali was eager to rope in the veteran actor for the sequel of his 1981 blockbuster, we hear Rekha isn't too keen to be part of the film Muzaffir Ali wanted to make a comeback in Bollywood and hence asked his good Javed Siddiqui to the write the screenplay of Umrao Jaan's movienews