Son, the current Spurs captain, is currently representing South Korea in the Asia Cup in Qatar, with Romero set to lead the team out again in Friday's FA Cup 0-1 lost tie with holders Manchester City. Romero was captain for the 2-2 draw at Manchester United two weeks ago, with Tottenham manager Postecoglou impressed by how the Argentina centre-back Romero has dealt with the extra responsibility.
"There's definitely a void there but with all these things there's definitely opportunities," said Postecoglou. That's where Romero has really stepped up. "You just feel it around the place. He knows that Sonny's not here and he knows what Sonny does on a daily basis."
The Australian added: "Sonny gets around everyone in the building and says, 'how you going?' and Cristian's doing that now. I can see that. In training he's a lot more vocal than he was in the past.