West Ham's new boss turned the injured midfielder into the first of his nine summer signings when Arsenal decided he could no longer bet on his fitness.
Pellegrini remembered Wilshere well from his previous time in England, when he led Manchester City to the title, and took the opportunity to lead his Hammers revolution.
The Chilean is determined to wrap him in cotton and restore his physical condition, skills and strength that once marked him for greatness.
Pellegrini said: "First, he is only 26 years old and has had bad luck with injuries."
"I have plans for him, we are always talking"
"As a manager you can work on different tactics and systems, but if you do not have good players it is impossible to be a good team.
"In the eight, nine years he played for Arsenal, he showed that he is a different player, so if the injuries respect him, only he will make the difference for us.
"I have plans for him, we are always talking Maybe he does not work like the rest of the squad, but I am not afraid because in the last two seasons he played many matches, in Bournemouth and then in Arsenal.
"He's a young player and he knows his body and I hope he's in shape for most of the season."
"Every day we have the players in the GPS and we know the most meters he does before resting, so with the physical trainer and the science of sports, we will manage his work.
"Maybe with rest, he will run more in games than other players.
"I'm sure we can make him a player from England again." Technical players make a difference and Jack is the special type of player who can do different things.
"So by the way, if he continues to play every weekend, his performances will improve and I'm sure he'll have the option of returning to England."
Pellegrini begins his last adventure in the Premier League at Liverpool today (sun), a club that once interviewed him when he had just left Real Madrid.
He claimed then that he was not ready, preferring a change to Villarreal and then to Malaga to perfect his skills, leaving Liverpool to name Roy Hodgson.
But he's enjoying today's trip to Anfield, a place where West Ham has not won since 1963.
He said: "You have to play there sometime and we are ready, I do not regret not having joined them, my career would have been different if I joined them."
"It was Manchester City when I arrived in England after three years with Málaga, three beautiful years that shaped my career.
"Liverpool is a great club, but I also had the option of running some very big clubs as well."
He openly admits that he took advantage of West Ham's offer to return to England. "After two years in China, it was good to come back, I have always said that this is the best league in the world.
"My championship-winning medal is in a good place at my house in Chile, it would be nice to add another one.