Sydney FC's pieces falling into place for Frank Farina After months of rotating and rejigging his side like pieces in an impossible puzzle, Sydney FC coach Frank Farina hopes he has found the starting side that will finally deliver consistency. Only one change will be made for Friday night's clash against Melbourne Heart at AAMI Park, with Nicky Carle coming in for Terry McFlynn, who has a thigh injury. In the past few weeks, Farina has settled on the 4-4-2 diamond as his preferred shape and is now optimistic the right players can successfully fill out his formation. Natural replacement: Defender Eddy Bosnar. It would be hard to make changes. The only thing you have to look at is the short turnaround [from Sunday] to Friday," Farina said at training on Thursday. Milos [Dimitrijevic], for example, that was his first game and he wasn't meant to start but he did and performed very well. Physically, we'll see how he is but normally it's difficult to change a winning side. We're forced into it with Terry being out, but with everyone performing well, I don't see too many changes. Reflecting on the 5-0 battering of Melbourne Victory last Sunday, Farina said keeping the ball was the one facet he wanted to maintain for the rest of the season. "We've always harped on about possession and, in previous games, we've most probably turned over too much possession, whether it's been through bad passing or bad control," he said. The key last week was that we held the ball very well. We moved it well, in the midfield particularly, and if you do that, more often than not, you'll get results. Although the Heart remain a distant last, the club is riding a crest of belief after being sensationally taken over by Manchester City and landing some improved recent results. "Melbourne Heart have gone through a lot of difficulty this year, and in the previous two weeks, they've played pretty well, winning against Newcastle and unlucky draw against Adelaide," Farina said. Last time up here, we were probably lucky to beat them. They're a good side, and even though they're last on the ladder, it's going to be a good game. Sydney's decision to release Tiago Calvano to the North American Soccer League has given the opportunity for the club to sign another defender, and with Eddy Bosnar training with the Sky Blues, Farina accepts he'd be a natural replacement. "[Tiago's release] opens a door but whether or not we decide to welcome [Bosnar] through that door, we'll decide most probably on the weekend because that decision needs to be made by Tuesday," Farina said on Thursday. Eddy's looking in good shape and we are looking a bit thin across the central defence now, so there's an opportunity there. Bosnar, 33, has been on the books of Sturm Graz, Everton, Dinamo Zagreb, Suwon Bluewings and Guangzhou R&F but is without a club. He doesn't have to do a lot to impress me. He's got a great history," Farina said. It's just a decision we've got to make both financially and for the team. If it's the right one, we'll go about it. The opportunity for Bosnar or another player to come in will be on a strictly short-term basis. Farina admitted he was reluctant to offer long-term deals in an effort to have maximum squad flexibility at the end of the season. I'm satisfied with the squad we've got at the moment, and we've got two spots available. Options are the issue, and there's no point filling those spots beyond the end of the year," he said. It won't be long term. At the end of this current season only eight players remain on contract so there's an opportunity to really rebuild.