Souness feels like the Tottenham Hotspur machine is underrated at international level.
The Spurs midfielder has started just one of Belgium's four matches in Euro 2016 this summer despite being one of Tottenham's most impressive players last season.
The game he started was a comprehensive 3-0 demolition of the Republic of Ireland in the second match of Group E. He went off injured that day, but was back on the bench in their next two outings.
The powerful 27-year-old proved himself a vital cog in the Lilywhites' midfield nigh-on every week, but his manager at international level Marc Wilmots does not seem to value him as high as, say, Spurs boss Mauricio Pochettino.
His low-profile on the international scene has perplexed Souness, who does not understand why Wilmots elects to field who the Scots believes to be inferior players.
“Axel Witsel went to Zenit Saint Petersburg for £32m, but he is nothing more than a steady player and it’s the same with Nainggolan,” Sounes told The Times.
“Moussa Dembele has a bit more than both of them but does not start, for some reason.”
With that being said, Belgium are getting on okay without the Spurs machine, with Wilmots's side thumping Hungary 4-0 on Sunday night to book their spot in the quarter-finals.
Still, that is not to say the result would not have been similar had Dembele started, but the Belgium coach has obviously adopted a 'if it's not broke.....' mentality.