The 24-year-old made a deadline-day switch from Chelsea to spend the season at Anfield and add to Rodgers' growing attacking options.
"In terms of this summer, it was probably unexpected for him," the Reds boss said.
"He's a player that has got experience - he's 24 years of age and became available for us.
"It's a unique opportunity for him; he's leaving a very good club, that has been successful, and he's coming to one of the biggest clubs in the world.
"There are not many players that get a chance to do that. He's coming here to prove himself."
While the deal was done late, it was no snap decision by Rodgers as he had banked plenty of information about the player over the last few years.
"I know he will work well because he's a good guy; I met him when he was 16 and nearly signed him at Chelsea then," said the Northern Irishman, referring to his time as youth coach at Stamford Bridge.
"He came to us to train while he was a young player at Crystal Palace.
"Everything was set up for him to come to Chelsea at the time and for whatever reason it fell through and he stayed.
"I know what I'm getting. He's got the profile that suits our game in terms of his technique, his quality and he's a humble guy.
"He had some good performances for Nigeria when he was away (in the last fortnight) and he really looking forward to getting in a Liverpool shirt.
"Like a lot of our attacking players, they are flexible, have good tactical intelligence and are comfortable to play in two or three positions.
"When he was a young player, he was the number nine so he can play in the central striking role or can move. In any one of those top four positions, he's comfortable.
"We've seen him a lot playing from the left side, where he cuts in - he's got great feet, great ability, can shoot off either foot and can beat a man, which is important for us."
- Sports & Recreation