Modric has returned to training at Spurs Lodge.
The Portuguese, who was speaking before Modric's return to training was confirmed, said in the US: "The player's behaviour at the moment is not what we want and that's why we are trying to bring him back to Tottenham duties. The last I heard he was back in London.
"Unfortunately for him he is going to have to be fined by the club for not being present.
"He is a player who has offered so much to Tottenham so we have to have a sense of respect for what he has done over the years for us, but the chairman feels that the fact he is not present is not common professional behaviour.
"Hopefully the situation can be solved in one of two ways - the two ways being that the clubs interested meet the demands of Tottenham regarding the player's value, or the player continues and returns to club duty."