Celtic can expect a powerful box to box midfielder in new signing Joel van den Berg. The 19-year-old put pen to paper on a four-year deal from Dutch side PSV Eindhoven and watched on as his new club beat Aberdeen 3-0 in the Scottish Premiership. Van den Berg joins Mika Baur and Oliver Sorensen as summer arrivals to Celtic's midfield, but what can fans expect from their latest addition?