BBC Scotland's Tom English reviews another frustrating night in Europe for the Scottish champions.

Martin O'Neill spoke of refereeing decisions and near misses after the Europa League defeat against Celta Vigo. But is the reality more concerning?

Jordan Hadden waved fellow supporters to come onto the pitch at Ibrox after the Scottish Cup quarter-final tie in March.

Former Norwich City and Finland striker Teemu Pukki announces his retirement from football at the age of 36.

BBC Scotland examines whether Celtic’s 7-1 win over Hearts proved they are better without their record signing.

Jota admits he "met some demons" during his long injury absence but believes there is no need to "rush" his return to full match fitness at Celtic.

Amid supporter discontent, a recent protest against the major shareholder and a veteran manager deciding now is not the time to "wrap things up", as Martin O'Neill put it, you'd be forgiven for scratching your head when examining Celtic's current domestic situation.

Hearts thought attack was the best form of defence at Celtic Park. They were badly wrong, writes Tom English.

Hearts' last trip to Parkhead ended with their title dream being crushed in the space of 11 minutes. They return to face Celtic on Sunday refreshed and reshaped.

Celtic have now lost two Europa League group games, as well as two derbies - but Martin O'Neill is adamant he can see positive signs.

As the club returns to the Portuguese capital to face Benfica, fans have once again made the journey to the Estádio Nacional, where the Lisbon Lions made football history in 1967.