Katrina Kaif has not asked filmmaker Anurag Basu to fire up her chemistry with rumoured boyfriend Ranbir Kapoor in their upcoming comedy-drama film "Jagga Jasoos", says her spokesperson.

According to reports, Katrina is said to be worried about Ranbir and his former girlfriend Deepika Padukone's sizzling chemistry in the forthcoming film "Tamasha".

"These rumours are clearly someone's imagination running wild. Though this makes fodder for gossip, it is categorically and entirely untrue. These stories are misleading to the audience and fans in general. Such idle gossip is really avoidable and childish," Katrina's spokesperson said in a statement.

Deepika and Ranbir are returning on the silver screen together after a gap of two years with filmmaker Imtiaz Ali's romantic drama film "Tamasha", which is slated to release on November 27.

Meanwhile, "Jagga Jasoos", which is slated to release in June next year, will feature the couple after 2010's "Raajneeti".