Dutch footballer Ian Maatsen joins Borussia Dortmund on loan

Young left-back moves to Bundesliga club from Chelsea

Ian Maatsen, a Dutch footballer, has joined German club Borussia Dortmund on loan from Chelsea. The 21-year-old left-back has signed a one-year deal with the Bundesliga club, with an option to buy. Maatsen has been a regular for Chelsea's youth teams, and has also represented the Netherlands at youth level.

Chelsea loanee Maatsen makes Dortmund move

Maatsen is a highly-rated young defender, and his move to Dortmund is seen as a major coup for the Bundesliga club. He is expected to challenge for a starting place in the team, and could make his debut in the Champions League later this month.

Maatsen's move to Dortmund is the latest in a line of young players to leave Chelsea on loan in recent years. The club has a policy of sending its young players out on loan to gain experience, and Maatsen is the latest to benefit from this policy.