Click the transfers team the he came from. Then look for 1 of 2 types of games.... 1) complete blowouts where all 12 players likely entered the game. 2) games with scores in the 100s. Where again, all 12 likely played.
Look at the box score and find the players name that transferred. You can see his attributes there for free. You won't be able to see potentials. But you can get a visual estimate based off his growth that season, his WE, and his class (a soph will likely have more growth left than as senior for example)