Timo Glock was initially signed to compete for Marussia until the end of the 2014 season, but later announced that he would be leaving the team. Marussia team principal John Booth cited "tough economic conditions" as the reason for the team being forced to let Glock go, whilst Glock referenced the loss of tenth place in the 2012 World Constructors' Championship to Caterham at the 2012 Brazilian Grand Prix as the first sign that his position with the team was in danger. Glock moved to the Deutsche Tourenwagen Masters, driving for BMW. With Glock gone, the team elected to take two rookie drivers: Max Chilton, who spent the 2012 season competing in the GP2 Series with the Marussia-backed Carlin team; and GP2 Series runner-up Luiz Razia. However, Razia was removed from Marussia's testing line-up for the second pre-season test in Barcelona, leading to speculation that his future with the team was in jeopardy. It was later reported that his sponsors had missed payments to the team, prompting the decision to suspend his testing programme. His contract to race was terminated twenty-three days after it had been announced, and Razia was replaced by 2009 Formula 3 Euro Series champion and 2012 Formula Renault 3.5 Series runner-up Jules Bianchi.