Curtis Sironen

Manly lose Sironen for at least 8 weeks

Sironen will meet with surgeons on Tuesday, where he is likely to be told he will need surgery after getting caught awkwardly attempting a tackle in Sunday's win over Cronulla.

His absence will take some serious air out of a flying Sea Eagles side that have surged into the top four for the first time since 2014.

The former Wests Tigers forward is considered one of the most improved players in the competition this year following his move to the northern beaches over the summer.