AceShowbiz -

Calvin Harris sparks new romance rumors with Nicole Scherzinger after they were photographed together in London on Saturday, July 9. The rumored couple was caught linking arm while leaving the Tape nightclub in the early hours of Saturday.

Nicole wore a khaki one shoulder top paired with matching leather skirt and nude strappy heels. Her hair was slicked back. Calvin, meanwhile, sported a white sweatshirt, black trousers and brown shoes. They were escorted to a waiting car by a bevy of bodyguards.

While fans are speculating that this could be Calvin's rebound after splitting from Taylor Swift, sources close to the "How Deep Is Your Love" hitmaker say that they're just friends. "They're casual friends, and if they see each other at a club or party they will chill," an insider tells E! News. "They are not hooking up or hanging out. Calvin isn't rebounding with anyone at this time."

In fact, Nicole is still happily dating tennis star Grigor Dimitrov. The couple was last spotted out for a romantic dinner at lavish eatery Sketch in London on June 21. At the time, they were photographed cozying up in a taxi.

Calvin previously told his friends that he didn't want to be romantically involved with celebrity following his breakup from Taylor. The "This Is What You Came for" hitmaker reportedly believed celebrities, including his former lover, were narcissistic.