Complex sentence: However, he was once again sent-off in a league match away to Mortonon 25 January albeit in controversial circumstances where it was alleged Halliday made an offensive gesture to the home support after Barrie McKay had scored to make it 2-0 to Rangers.
Split into simpler sentences: However, he was once again sent-off in a league match away to Morton, in controversial circumstances. On 25 January where it was alleged Halliday made an offensive gesture to the home support after Barrie McKay had scored to make it 2-0 to Rangers.