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Five things to know about new Arsenal signing Rob Holding

Rob Holding became Arsenal's third signing of the summer transfer window on Friday after joining the Gunners on a long-term deal from Bolton. The 20-year-old centre-back is hardly a household name, but Arsenal manager Arsene Wenger clearly thinks the young defender has a lot going for him. Here are five things to know about Holding:

Versatile defender

Holding is viewed by many as one of England's most promising defenders and can play either as a centre-back or a full-back, having also been used on the right by Bolton. But if Holding himself gets to choose, he'll play in the middle for the Gunners.

"I felt more at home at centre-back than I was at right-back," he told the Arsenal website.

At 1.82 meters, Holding offers a physical presence at the back, but is also known for his ability to read the game well and play the ball out of the back -- skills that Wenger views as key even among defenders.

Quick rise

Even some Bolton fans have been surprised by Holding's quick rise, as he only made his first-team debut last August. But he quickly established himself as a key part of the team's back four and was named the club's player of the season. He made 26 league appearances in total, scoring once. He couldn't prevent Bolton from being relegated from the Championship to League One, but Holding himself will now trade the third-tier of English football for the Premier League.

Youth international

Holding's impressive season was rewarded with his first call-up to the England Under-21 team by Gareth Southgate for this summer's Toulon Tournament in France. He made his international debut in England's 7-1 victory over Guinea, and played part of that game alongside new Arsenal teammate Calum Chambers. The 21-year-old Chambers is another centre-back prospect for the Gunners, and Wenger would probably love to see the young duo form an all-English partnership in the future.

New shirt number

Holding is unlikely to challenge the likes of Laurent Koscielny, Per Mertesacker and Gabriel Paulista for a starting job during his first season at the club. But Arsenal made it clear that he will be part of the first-team dressing room by giving him shirt No. 16, which was worn by Aaron Ramsey up until this summer. Youth academy players are normally given much higher numbers, so perhaps fans won't have to wait too long to see Holding make his debut at the Emirates.

Arsenal had originally given fellow new signing Granit Xhaka the No. 16 shirt, but the Switzerland midfielder then decided he wanted No. 29 instead.

Cheap holidays

While many footballers enjoy glitzy vacations in Miami or Ibiza, Holding seems to have more down-to-earth tastes. The defender posted photos from his holiday in Thailand this summer with a group of friends, and the Bolton News reported that they stayed in a hostel that cost £5 per night.

Of course, getting a Premier League contract may mean he can upgrade his accommodations next time.