Chairman Milan Mandaric commented: "We should know in the next 24 hours whether anything will happen. He is a quality young player, and the time is running out for us to sign a left-sided defender.'
But he warns: "If we don't succeed then we are looking aggressively and have others we are ready to pursue".
He also suggested that Portsmouth are interested in buying cover for Todorov, with Darren Huckerby's name mentioned. However, defensive cover remains top on the agenda.