New Delhi, Apr 03 (ANI): Here is another reason for Beliebers to go crazy! Former 'One Direction' singer Zayn Malik might attend Justin Bieber's 'highly awaited ‘Purpose Tour' in India as a celebrity guest. Recently, a possible collaboration between Bieber and Malik was hinted, courtesy their budding camaraderie on the social media. The 23-year-old singer retweeted a link of Malik's new single from his upcoming album featuring rapper 'PARTYNEXTDOOR', which he does not just do for everyone. As per a source to company organising the event, they have invited Zayn as a celebrity guest during the May 10 concert in Mumbai. Bieber will be performing at the D.Y. Patil Stadium on May 10 as part of his Purpose World Tour. The tickets of it will now be sold live from April 10.