Massimiliano Allegri says it is "useless" to discuss the transfer market as Juventus prepare to start the Serie A season against Sassuolo on Monday.
Paul Pogba, Angel Di Maria, Gleison Bremer and Filip Kostic have arrived at Juve during the transfer window, while Leandro Paredes and Memphis Depay have also been linked with moves to Turin.
Juve midfielder Adrien Rabiot is reportedly a target for Manchester United and on Sunday, Allegri suggested Arthur – who is sidelined with an ankle injury – could also move on.
But the Bianconeri coach is determined to avoid being distracted by transfer talk ahead of the clash with Sassuolo at the Allianz Stadium.
He said: "It is useless to talk about the transfer market, the club thinks about it. Players who left have been replaced, we must think about tomorrow's match.
"Sassuolo are coming from a bad defeat in the Coppa Italia [3-2 against Modena], but they have taken on important players like [Andrea] Pinamonti."
Meanwhile, Allegri believes suffering a 4-0 friendly thrashing against Atletico Madrid could be a blessing in disguise for Juve as they attempt to mount a title challenge.
He said: "We had three important friendlies, the last one ended badly and we had worked a lot during the week. The defeat did us good to make us raise our antennas, I have heard too many triumphalisms around.
"Juventus has the duty to try to win, the competitors have strengthened. There are four or five suitors [for the Scudetto] and we are among them. We have to work in silence, improve the team from all points of view.
"I think it is a job that we are doing every day, the club has been very good at replacing those who left. Let's think about the championship before the market closes, three at home and one away.
"We will have to suffer, like in all games. It has always been the strength of winning teams, respect the opponent. We need to do well when we have the ball and improve without the ball."
Allegri added he is yet to decide whether new winger Kostic will start on Monday following his move from Eintracht Frankfurt.
"Kostic is a player who crosses very well, he has arrived for two days and among other things he has been back and forth," Allegri said. "I still have to decide between him, [Weston] McKennie and [Juan] Cuadrado."
Rabiot and striker Moise Kean are not available for Juve's season-opener due to suspension, as they bid to improve on successive fourth-placed Serie A finishes.