Newcastle United boss Sam Allardyce is interested in the England job.
Publicly Allardyce has indicated he is not interested, but Barnwell is adamant that the former Bolton chief would find the challenge irresistible, saying: "Sam can be persuaded, I'm sure of that. I'm also sure he could handle every aspect of the job.
"As he did at Bolton, he'd analyse the whole thing and work out a structure. He would approach the job in a different manner to how it has been done before."