Having snapped up left-back David Buchanan last week, Wilder has moved to shore up the opposite flank with the capture of Josh Lelan on a 12-month contract.
The 20-year-old was a free agent after the expiry of his Derby County contract and his new manager describes him as 'mobile and athletic' and capable of filling in other defensive positions.
Not content with the quartet of deals he has already done, Wilder is also in advanced talks with a goalkeeper and central defender.