Alex Arthur told Ringside that he expects Floyd Mayweather to make light work of Marcos Maidana when the pair square off.
The Argentinian was chosen as Mayweather's next rival over Amir Khan following a vote on Twitter and will now take on the unbeaten 37-year-old later this year.
However, Arthur - a former world super-featherweight champion - feels the chance of the number one being etched into Mayweather's loss column after he clashes with Maidana is remote.
And the Scot is backing the Michigan-born star - who overcame Saul Alvarez in his previous encounter - to beat his South American opponent pretty easily.
"Stylistically Maidana is an easier fight for Mayweather than Khan as he is something he has dealt with numerous times," said Arthur, who retired in 2012 with a record of 31 wins and three losses.
"Maidana will come forward in an aggressive fashion with his head held high and Mayweather will roll his shoulders, counter-punch him for 12 rounds and win a lopsided unanimous decision."
Khan defeated Maidana via a points verdict in 2010 and Sky Sports pundit and commentator Jim Watt feels the Bolton boy would have had a more absorbing fight with Mayweather than the one 'El Chino' will be part of.
However, the Scot says Maidana fully warrants his opportunity having shattered the unblemished CV of American sensation Broner with a 12-round triumph in San Antonio in December.
"I only see Mayweather losing if Father Time catches up with him or if he moves up too many weight divisions and I think he is too smart for either of those things to happen," said Watt.
"So the next best thing we can get is someone who will test him and make it entertaining and I think Amir, with his speed and courage, would have put on a show.
"Khan would have put on a better spectacle than Maidana, so I feel for him, but Amir probably didn't earn a crack and Maidana probably deserves it after his terrific performance against Broner."
Mayweather's last victim, Alvarez, returns to the ring on March 8 for a tussle with countryman Alfredo Angulo and Watt does not expect to see much scar tissue from the man known as Canelo.
The onetime world lightweight champion says the 23-year-old's heritage will ensure he does not dwell on his loss - his first in 44 fights as a professional - but did question the wisdom of taking on the multi-weight master.
"Sometimes after people have been in with Mayweather their head can get destroyed and it takes them a few fights to get over the realisation that they are not invincible," added Watt. "But one word sums up Alvarez: Mexican.
"That means a defeat is a defeat and he will get over it but while it was not a mistake financially, it may have been [boxing-wise]."