Getty Images Enlarge Lewis Hamilton says he remains committed to extending his career at Mercedes beyond the current season despite admitting "sticky" issues need to be resolved with his new contract. Hamilton's current deal expires at the end of 2015, with extension talks put on hold last year after the Belgian Grand Prix so he could focus on the championship battle. That tactic paid dividends as he won six of the next seven races on route to winning his second world drivers' championship, though he is yet to secure a deal since the conclusion of last year. Mercedes boss Toto Wolff recently said Fernando Alonso would be top priority for the team in 2016 if a Hamilton extension...
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