However the 19 year old decided to take up the offer from Posh, saying first team football is his priority.
Blanchett, speaking to the Posh website, said, "I am really exited about this move. It is a good club to sign for. Peterborough are an ambitious club, the chairman wants to go places and the manager matches that ambition."
He added, "I want to play first team football and hopefully I will get that opportunity here. A few clubs have watched me at Cambridge City, but I just kept my head down and did my job. I thought as a young player Peterborough would be the ideal club for me."