Former boxing star Eric Esch, also known as Butterbean, has offered to pay £1.5million to fight Jake Paul as his showdown with Mike Tyson continues to hang in the balance. Paul and Tyson had been due to fight on July 20. However, with the boxing icon recently suffering an ulcer flare up, their bout has now been pushed back instead. As things stand, the two Americans are poised to lock horns on November 15. With Tyson needing to pass a series of medical checks, however, their clash isn’t guaranteed to happen. Paul recently beat Mike Perry, with the 27-year-old beating the former UFC star via kn…