The 24-year-old, whose profile went through the roof after his four-goal haul at Leeds earlier in the year, is out of contract shortly.
News of his talks at the Madejski Stadium, if confirmed, will be a big blow to Steve Cotterill's hopes of keeping the winger at the City Ground.
Currently being linked with a move to Forest is defender Karleigh Osborne, a free agent this summer after turning down a new deal with Brentford and also a target for Charlton Athletic and Brentford.
Dexter Blackstock meanwhile will be part of the Antigua and Barbuda squad that faces the USA and Jamaica in World Cup qualifiers this summer.