Jovic has struggled for game time since his €70 million (£62m/$79m) arrival from Eintracht Frankfurt in June last year, with form, fitness and Zidane's preference to play Karim Benzema up front hindering the Serbia international.
Asked about Jovic - who was handed a rare start alongside Benzema in the 3-2 win over Real Betis last week - on the eve of Madrid's La Liga clash against Real Valladolid, Zidane told reporters: "You have to take everything into account.
"Until the fifth [of October], the market is open. We will see. The players are fine and that's what interests me."
Jovic endured a turbulent first season with Madrid in 2019-20 following his big-money arrival from Bundesliga outfit Eintracht, managing just two goals in 25 appearances.
There have been suggestions of a rift between Zidane and Jovic, with the French tactician asked whether he had an issue with the striker following his decision to leave the Serbian on the bench as Real battled to a 0-0 draw against Sociedad in their opening La Liga match.
However, Zidane was quick to dismiss any speculation about an issue with Jovic, explaining it was a tactical decision to use young attackers Marvin Park and Sergio Arribas instead.
"I didn’t want to change the formation. So, I could have put on another centre-forward by taking one off, but I didn’t want to change the formation," Zidane said after the stalemate with Sociedad.
"I’d have had to take [Karim] Benzema off, but he was playing well. By playing two centre-forwards, I would have needed to change the formation yet I wanted to keep two wingers on the wings."
"We have a squad and many players and I have to choose. Today, this is how I picked things. But, I don’t have anything against any player. Like I said before, I didn’t want to change the formation."
Madrid have four points from two games to sit seventh in La Liga, three points behind leaders Getafe - who have played three matches.