Sweetest Natured dog facing being euthanized.

In 2016 Diesel the Staffie Staffie was found at Manchester airport. He had vanished from the owners garden 8 months earlier. He was described by the police as ' the friendliest, daftest, sweetest dog'.
Unfortunately, last year, while being looked after by the friend of the owner, he was let off the lead and attacked a smaller dog, who sadly died.
The magistrates have issued a destruction order. The owners have not contested it. So it seems Diesel has to pay the ultimate price because of the irrisponsible actions of the owners.
I am pleading for them to save Diesel with STRICT provisions...Muzzled at all times, always on lead, dog training classes. He made one terrible mistake but his past sweet nature has not appear to have been taken into account.
Can we try and save Diesel?