Megadeth frontman Dave Mustaine has reiterated that David Ellefson, who was dismissed from the band in May, will not return to Megadeth – and has also teased fans with a brief glimpse at the bassist’s replacement on the thrash outfit’s new album.Mustaine recently joined Cameo – a platform through which fans can pay to receive personalised videos from celebrities – in an effort to raise money for the American Society for the Prevention of Cruelty to Animals.In a video commissioned by YouTube