Fullback Spector struck twice from midfield in their Carling Cup win over Manchester United.
Grant told whufc.com: "Of course he is an option. For the last month we tried him in midfield. We changed his position and he did well for us.
"This is important because you know all our midfielders were injured and couldn't play - it started with Hitzlsperger, then Mark Noble and Valon Behrami and, last week, we were without Scott Parker. It's good for us to have one more midfielder who can play."