 Complete the following phrase:  Kevin Magnussen replaced Pérez for , and Ron Dennis, who had remained at arms length since stepping down from the team principal role, returned as CEO of the operation. McLaren were the first team to officially launch their 2014 car, the MP4-29, which was revealed on 24 January 2014. They had a largely unsuccessful 2014; their best result was in Australia where  after Daniel Ricciardos disqualification from second place  Magnussen finished second and Button third. Button subsequently finished fourth in 