Former Lady Gaga manager Troy Carter has signed John Mayer and Miguel to his Atom Factory roster.

According to Billboard, the deals were finalised towards the end of last year, with Miguel signing in November after departing his previous management firm Red Light.

Meanwhile, talks with Mayer are said to have begun after the guitarist/singer/songwriter split from his long-time manager Michael McDonald in early December.

Mayer had spent 13 years, while Carter himself made headlines after a split with long-term ...