Lavery has not played for the Owls since January after a knee injury hampered his progress, and he will be under pressure to prove his worth at Hillsborough between now and the end of the season.
The Wednesday youngster, who has recently been recalled from a loan spell at League One side Chesterfield, is expected to go straight into the side's squad for their match against Wolverhampton Wanderers tomorrow, and he will be hoping to show Gray exactly what he can do.
"Caolan was out for a long time with his knee injury and he needed to get those minutes under his belt and he has done on a regular basis for Chesterfield," Gray said.
"You can train every day of the week but nothing beats that match intensity so hopefully he will have some part to play against Wolves and for the remainder of the season."
Lavery may have not had much of a chance with Wednesday this season, but there are still high hopes over his future at Hillsborough.
The Owls academy graduate has shown flashes of ability during his time in the first-team and he will be looking to ensure that he isn't sent out on loan again.
Lavery had a productive spell at League One level, where he scored three times in eight games for Chesterfield, but he has a chance to prove to Gray that he is ready for a starting role for Wednesday again now.
The Owls' season is looking likely to fade out, with the Yorkshire outfit set for a mid-table finish, and Gray is set to tinker with his squad to see which players will be important to him next season.