Hussain, from Rochdale, came under police scrutiny after his eight-year-old nephew in Hull went into school saying he wanted to join the Taliban, the hearing at Liverpool Crown Court was told.
Hussain was subsequently jailed for five years for helping Mohammed Kadir, then 24, flee the UK for Syria.
Kadir is believed to have struck the fatal blows and planned the killing of Mr Uddin with former Manchester United steward Mohammed Syeedy, then 21, who drove Kadir to the scene and helped carry out surveillance on their target.
Kadir fled the UK three days after the killing with the help of Hussain.
Syeedy was convicted in September 2016 of murdering Mr Uddin and sentenced to life with a minimum term of 24 years.
Both Kadir and Syeedy were sympathisers of the Islamic State militant group and were consumed by hatred of Mr Uddin for his practice of Ruqyah, a form of exorcism, which the terror organisation considered “black magic”, the inquiry has heard.
