Already without 2017 sensation Clinton Gutherson, the Eels have been dealt a major blow with Hayne and French both injured in the loss to the Sharks.
This leaves the club in dire straights at the fullback position and Brad Arthur has been forced to named utility Will Smith in the No. 1 jersey for their Round 4 match against the Wests Tigers.
The injuries to the key forwards have created the opportunity for Tony Williams to make his return for the Blue and Gold after he was named on the interchange bench this week.
The Eels play the Wests Tigers on Monday at ANZ Stadium.