Champions League: Celtic stopper Viljami Sinisalo backs Martin O’Neill’s Bhoys to keep improving

Celtic goalkeeper Viljami Sinisalo has insisted the Scottish Premiership champions can improve despite making a perfect start to the season.

The Bhoys have won four games in a row so far, scoring 13 times and conceding just once, as Martin O’Neill sets about stabilising the club after the previous campaign’s turmoil.