Celtic were about 10 minutes away from losing their Scottish Premiership crown. What that would have meant for Martin O'Neill's future is unclear. A Scottish Cup triumph followed the next weekend, before O'Neill was confirmed as permanent boss after a tumultuous season in which the 74-year-old had two interim stints at the club where he holds legendary status. Despite a memorable end to the campaign, a lack of transfer business was again threatening to become the story of another summer at Celtic. O'Neill has vowed to "drive forward together" and "not rest on past success", so what could a full season with the Northern Irishman at the helm look like?