The centre-back is considered to be one of the best defensive prospects in Europe and had been linked with a host of top European sides before completing his move to the German outfit on Monday.
The 22-year-old has signed a four-and-a-half year deal with the Bundesliga side, with the fee remaining undisclosed.
Akanji has forged quite a reputation for himself in recent times, owing to a series of solid displays in both the Swiss League and the Champions League.
The Swiss international will now have the chance to prove himself at a higher level as Dortmund look to build a side capable of challenging Bayern Munich for the Bundesliga title.
15 January 2018