John Hartson has hit back after receiving a lot of criticism from Republic of Ireland fans for apparently defending Neil Taylor following his tackle on Seamus Coleman.
Martin O'Neill somberly confirms that Ireland captain Seamus Coleman broke his leg in their draw with Wales.
Gareth Bale will also miss the Serbia game after being booked on Friday.
Wales boss Chris Coleman defended his players - indeed, he said Bale wanted to appeal against his caution, something he could only do on the grounds of mistaken identity - but O'Neill remains adamant that both tackles were nasty.
Coleman faces as long as 10 months on the sidelines following the horrific injury he suffered in the World Cup qualifier against Wales.
"I asked if Seamus was listening to him and he said, "Yes, to be fair, he was".
Meanwhile FIFA will cover the cost of Coleman's wages while he recovers from his horror injury.
Wales will be looking to halt a run of four consecutive draws that has left them sitting third in Group D, four points behind Serbia and Ireland in the race to reach Russian Federation next year. He caught him high and I think he was in tears afterwards.
O'Neill, speaking about Coleman at his pre-match news conference ahead of Tuesday's friendly worldwide with Iceland, said: "I think he's just beginning to come to terms with it".
He added: "I think he's just beginning to come to terms with it".
"It's a major blow, not only for the player, but obviously for his family, people who were at the game watching that", the former Northern Ireland worldwide added.
"It will take some time, but Seamus has great determination and sometimes those things work very much in your favour, in terms of recovery". And he was missed even in the last couple of days around the place. "It's a balancing act between getting players who are actually deserving of the cap some worldwide experience, that's a call I have to make".
But O'Neill is hoping he will return as good as ever having seen former Celtic striker Henrik Larsson bounce back from a similar injury.
'He's a very, very positive person and he has a very strong family around him who will help him get back.