The future of Celtic hero Matt O’Riley is going to be a hot topic throughout the summer so it’s important that the club draw a line in the sand on his asking price. Coming off the back of a superb season that resulted in 37 direct goal contributions, O’Riley is a wanted man and clubs have already tried to test to resolve of the Scottish champions. Back in January, it was reported that Atletico Madrid were keen on landing the midfielder but Celtic swiftly booted that out, though the Spaniards are said to retain interest. Now others are being warded off due to the club’s valuation of over £25m, …