Davids arrival to boost Bees Edgar Davids will be in the dugout for the first time as joint-head coach of the Football League's bottom club Barnet when Plymouth visit Underhill this weekend. The 39-year-old former Ajax, Juventus and Barcelona player, will return to England for the first time since 2010, after accepting to take up a player-coach role at the Bees. Collins John is set to make his long-awaited debut. The Bees sprung a surprise when they persuaded former Fulham and Holland striker John to join them as a free agent last month, but they only received international clearance for him this week. The 26-year-old will go straight into Mark Robson's squad with Barnet still looking for their first win of the season. Robson is still without Steve Kabba due to a knee problem while fellow frontman Ishmail Kamara remains a doubt with the shoulder injury he suffered on his debut at Fleetwood a fortnight ago. Graham Stack stays in goal with Liam O'Brien continuing to build up his fitness following a hernia operation. Plymouth boss Carl Fletcher has been boosted by the extension of Guy Madjo and Alex MacDonald's loan deals ahead of the trip. Striker Madjo, who joined from Aldershot in September, has extended his stay at Home Park for a further two months. Fellow forward MacDonald is also set to remain with the Pilgrims until December after agreeing to his second spell away from Burnley. Loan defender Scott Griffiths is also set to make his league debut for the club after joining on loan before their midweek Johnstone's Paint Trophy win over Aldershot. Fellow defender Darren Purse returns from suspension but Maxime Blanchard is still doubtful with concussion and faces a late test. Warren Feeney and Ross Jenkins also require checks on groin injuries respectively while Onismor Bhasera remains on international duty .