Race engineer Rob Smedley is expected to follow Felipe Massa from Ferrari to Williams for the 2014 season.
Smedley has been working with the Brazilian driver since 2006 and he is expected to be another of Williams' recruits for the new season after a particularly poor 2013.
Williams deputy team principal Claire Williams has denied that a deal between the Wantage-based team and Smedley has been struck, saying that any such
agreements would be between Massa and his race engineer.
"They don't come as a package," Williams told the BBC.
"They come separately. They are very much their own people. So if Rob Smedley was to join our team, it has to be on his terms, and he has to be given a role he wants to do and that may or may not be Felipe's race engineer. Felipe is grown-up enough to join a team without bringing his race engineer with him.
"We're working very hard to address the problems we have in-house. We have some great talent in Williams but we need to make sure we have all the talent we need to perform right at the top.
"So I'm hoping that before the end of the season or maybe slightly after we'll be making some more announcements in a similar vein to Massa. Whether that involves a certain engineer or other engineers I can't tell you."
She added that the recruitment of Massa, a runner-up in the World Championship in 2008, indicates the team's ambition to continue as one of the leading outfits on the roster.
"We've done a lot of work this year in order to turn this team around and we want to tell the world that," she continued.
"Williams are not satisfied with coming ninth in the Championship.
"This is another piece of our jigsaw to tell the world that Williams is determined to come back and determined to fight for World Championships again."