The injured pair have missed the last four games with hamstring problems but after coming through a friendly game this week both will be hoping to be involved against Forest.
Republic of Ireland youngster Tommie Hoban is still a doubt with an Achilles injury which has ruled him out of recent games.
Daniel Pudil will be available again after missing the 4-0 home victory against Huddersfield due to a family illness.
In-form Czech international Matej Vydra has scored eight goals in his last four league starts and will continue to lead the Hornet's attacking threat at the City Ground.
Zola's squad has been in Spain this week for some warm-weather training as they look to consolidate their place in the npower Championship play-off positions.