The Baggies have allowed Silvestre Varela to leave the club and move on to Italian side Parma, and manager Tony Pulis told the Birmingham Mail that he's on the lookout for a new winger.
"There are certain areas on the pitch within the group that we have to get to enable us to be better," he said. "We do need a bit of pace out wide without a question of doubt."
It appears that Pulis has eyed up Antonio as a possible option, with the 24-year-old impressing for Stuart Pearce's Forest side this season.
Antonio joined Forest in a £1.5m deal from Sheffield Wednesday last summer, and has proceeded to rack up an impressive ten goals and seven assists in 29 appearances for Forest, which is a superb return.
The former Reading man is likely worth much more than that £1.5m now, but Forest are reportedly unwilling to sell regardless.
As reported here by the BBC, Forest are under a transfer embargo until the end of the season, and whilst they can sign certain loan players, it's believed that Forest want to keep Antonio rather than try to replace him with a budget alternative.
That leaves West Brom to look for other alternatives, though it will now be interesting to see whether Pulis targets Antonio again in the summer.