The former Ajax centre-half arrived at the Club from Atletico Madrid earlier this month, having enjoyed a solid season with Southampton in the Premier League last term.
His arrival takes our first team Belgian contingent up to four, with Mousa, Jan Vertonghen and Nacer Chadli all regulars along with Toby in their national side.
Nacer branded our newest recruit as “the complete defender” earlier this week, and Mousa has echoed those sentiments – the midfielder highlighting Toby’s upbringing at Ajax, where he formed a useful partnership with Jan, as key to his ability to perform well at the top level on a regular basis.
“Toby is someone who you can have a lot of confidence in because he always plays his game at a good standard – that’s his biggest quality for me, that he always has a certain level that he plays at,” said Mousa.
“He is a good player who has an unbelievable mentality and that’s a big thing for us – to have someone who you know will give 100 per cent for the team.
“He is a great character, a very good passer of the ball and he’s good in the air, so everyone can have confidence in him.
“With Jan and Toby at the back – they know each other very well and they’re very intelligent players. They both have the Dutch football education within them so it’s very positive for us.”