Celtic have signed two goalkeepers this summer but supporters are still waiting for the first outfield players to arrive at the club. With the Scottish Premiership kick-off just a week away, it’s a frustrating situation for plenty of fans. While recognising the difficulties of the market, everyone wants to see Celtic be the best possible version of itself and that involves strengthening the squad at every available opportunity. Right now, you couldn’t say the team is stronger than it was when it got over the line of a league and cup double at the end of last season. Earlier this week, Brendan …