The 22-year-old defender joined the Championship club on a free transfer last month after being released by Spanish outfit Cordoba.
The left-back was on the substitutes’ bench for Saturday’s pre-season friendly game against Premier League outfit Aston Villa at the City Ground.
Freedman has explained why he signed the youngster this summer and has high hopes for him this season.
“He’s a fantastic addition to the squad,” the Scot told Forest’s official website. “I saw him play in La Liga last year and he’s a very aggressive young player, 22 years of age, and on a free transfer I thought it was a no-brainer.
“I want a hungrier side and I think he’s full of hunger and desire. He’s got a little bit more to do in terms of fitness, which is why he didn’t play today, but he adds good competition to the squad.”
Forest have been quite busy in the transfer market so far this summer, signing as many as five players.
Goalkeeper Tim Erlandsson, defenders Matt Mills and Pinillos, and forward Ward have been recruited on free transfers, while custodian Ben Hamer has arrived from Premier League side Leicester City on a season-long loan deal.
Forest have loaned out forward Lars Veldwijk to PEC Zwolle for the 2015-16 campaign, while Jamie Mackie, Danny Collins, Greg Halford, Dan Harding, Djamel Abdoun and Radoslaw Majeswski have all left on a permanent basis.