Starlets Rocco Vata and Bosun Lawal have impressed Celtic winger Sead Haksabanovic.

The young duo were drafted into the first team for the trip to Australia and both saw some game-time in the opening Sydney Super Cup defeat to Sydney FC.

While the result went against Ange Postecoglou's men at the Allianz Stadium, Haksabanovic reckons the youngsters are both showing their potential to the established senior players.

"Rocco has got good things to his game that can make him become a good player," Haksabanovic said. "He is still young and needs to work on some things but given time and experience he will become a good player.

"Bosun Lawal has also come in and he showed a little bit so he can be great as well so hopefully for them both if they need anything they can come to me. They will learn over time."

Kyogo Furuhashi's goal was cancelled out by Robert Mak's leveller before a Max Burgess winner meant the hosts emerged triumphant in game one.

Celtic Way:

After the match, Postecoglou made his displeasure with the Hoops performance clear.

He said: "It was a very good game and there was a lot of goalmouth action but we were nowhere near it today. We were well off it.

"We didn't start the game well and credit to Sydney I thought they were good and they were sharp and started the game better. In the second half, we improved a little bit, but we were nowhere near the levels we needed to be and Sydney deserved to win.

"I understand it is not easy and it is a long trip and you are getting off there and in any game of football, there is always excuses if you want them. We have chosen not to do that in the past, and that is what we'll do today."

Celtic next take on English Premier League strugglers Everton at the Accor Stadium in Sydney on Sunday.