Jarrod Kyle officially joined Sydney FC on Wednesday with coach Frank Farina insisting the striker will have to earn his stripes in the Sky Blues' youth team.The 19-year-old Australian signed with the A-League club until the end of this season.His arrival comes after the axing of midfielder Jason Culina with Kyle's signature following an 11th hour move by the Sky Blues on Monday night, before the Australian transfer window closed.Farina said the club had been in talks with Kyle "only a day" before the deal was sealed.Kyle returned to Australia after three years playing with Sheffield Wednesday's academy, youth and under 21 teams."We had some information that he was coming back from England and we had a look at him (during training) and liked what I saw," Farina told reporters in Sydney on Wednesday."He's young, very strong and very quick, so it's worth having a look until the end of the season, and we'll go from there."For now Kyle will be playing in the youth team, but he could be part of the Sky Blues' bid to reach the A-League finals."It's up to him and how he goes, fitness wise and training," Farina said.The rookie's signing follows the termination of Culina's contract after his bust-up with Farina at training last week.Farina denied the spot became available because of Culina's exit."No, I don't think so. That's a closed chapter and everyone's said what needs to be said ... We've moved on and I'm sure Jason has too," he said.Kyle was thrilled to link with Sydney FC."It was just a spontaneous decision. I got the phone call on Thursday night, and flew out on Friday," Kyle said."Came here for one week and that was it really."Kyle claims he received a number of offers from various clubs."They're just such a massive club," he said."Hopefully if I play well in the youth team this weekend, get a good performance under my belt, I can push for a spot either on the bench or a start (in the first team)."