[BBC][Getty Images]Chelsea defender Malo Gusto is exploring options to leave Stamford Bridge this summer, with the club placing a £75m price tag on the full-back.The 23-year-old right-back's future has come under renewed doubt after Chelsea agreed a deal in principle to sign Atalanta's Marco Palestra, who plays in the same position, for a fee in excess of £43m.Gusto was aware his future was uncertain before that move, and sources have told BBC Sport that his representatives have held