naoki ogane says that chelsea have made an offer for yoshinori muto .
the 22-year-old forward has one goal in 11 games for japan .
muto admits that it is an ` honour ' to receive an offer from the blues .
chelsea have signed a £ 200m sponsorship deal with yokohama rubber .
muto graduated from university with an economics degree two weeks ago .
he would become the first japanese player to sign for chelsea .