Brosque, Sydney's Player of the Year in their double-winning campaign last season, left the Sky Blues for Japanese outfit Shimizu S-Pulse earlier this week.

The departure of Brosque leaves with Lavicka with four recognised strikers in Bruno Cazarine, Juho Makela, youngster Dimitri Petratos and injury-troubled Mark Bridge ahead of the Asian Champions League (ACL) which begins in early March.

Lavicka's current contract at the Sky Blues expires after the ACL group stages and a renewal may hinge on the side's performance in the competition.

''Of course, we need to replace him (Brosque) but it's not easy because he was a great quality player,'' Lavicka said.

"We have brought in Makela who has scored some goals, which is good.

"We've also discussed the possibility with the Sydney FC board of bringing in a new, quality striker for the ACL stages.

"We have weekly meetings and there have been discussions, but we will wait until the end of the A-League season before getting someone in."

Sydney FC are grouped with Kashima Antlers, Shanghai Shenhua and Suwon Bluewings in the 2011 ACL.

Brosque made 104 A-League appearances for Sydney, scoring 30 goals and providing 22 assists.

* In other Sydney news, Stuart Musialik's future at the club remains up in the air.

The Newcastle product doesn't yet have a deal with Sydney for next season and admits a potential new contracts has not been discussed.

''I haven't heard from anyone here,'' he said. ''So until then, it's all about head down, arse up, doing my job and seeing what happens in the next few weeks.

"I haven't had any concrete offers from any other clubs so it's a bit up in the air ... Sydney withdrew the offer at the start of the year, so I can't expect anything any more.''

Musialik said he hopes he can string together some late-season form to boost his chances of winning a new contract, whether it's at Sydney or elsewhere.

"For these last few games, I guess it's a little bit of both - if I am leaving Sydney, it's a good opportunity for me to go out on a high note, and you could also say that it's (an) opportunity for me to impress other clubs,'' Musialik said.

''Obviously, I'm not going out for each match thinking I'm on trial, I'm just going out to do the job that I have to do for Sydney, and if I am leaving Sydney, then hopefully I can go out on a high because I've had a great time here.

"Right now my priority is to play as well as I can and help the team.''