Jenson Button has emerged as a contender to join Lewis Hamilton at McLaren . Button is out of favour with Brawn at has yet to sign a new deal with them . Team principal Martin Johnson refused to rule out a move for Button . Johnson paid tribute to McLaren 's staff at their headquarters in the United Kingdom .
Jenson Button has emerged as a contender to join Lewis Hamilton at McLaren . Button is out of contract with Brawn at has yet to sign a new deal with them . Team principal Martin Whitmarsh refused to rule out a move for Button . Button paid tribute to Brawn 's staff at their headquarters in the United Kingdom .