"We have to live with a situation that many clubs have in this period, which is players who express their desire for a transfer", he told reporters.
"[A deal for Perisic] is one thing the club is working on, the possibility with different players".
'I'm happy with the players, we have enough to achieve big performances in the Premier League and Europa League. 'But the club say to me in the summer it is going to be different and we are going to have chances to spend money'.
"It is hard to keep players that don't want to stay but no offer has arrived yet so therefore the prerequisite for a transfer simply isn't there".More news: Wind Chill Advisory is in effect for central in through Friday afternoon
"We can only bring players that we are very convinced will be able to help us with a good performance", he said.
Marotta went on to add that Inter are willing to let Perisic leave, but only if their financial demands are met. 'My challenge is to improve the players.
Sokratis is expected to be out for "maybe two or three weeks", Emery said, while Koscielny's jaw is bruised, but not broken.
Arsenal beat Chelsea 2-0 in their most recent Premier League match, a result which will count for little if the Gunners fail to beat the relegation-threatened Cardiff, who will be emotionally charged with the search for Emiliano Sala ongoing.
"The problem is we're having a lot of injuries in this position".