The decision took 36 hours of frantic discussions Syria has agreed in \'principle\' a senior Arab League mission into the country to try to help end the bloodshed, sources have told news agencies. But the spokesman said Syria was still studying the details.
The Arab League suspended Syria earlier this week over its deadly crackdown on an eight-month-old uprising that the UN says has killed some 3,500 people.
The 22-member body gave Syrian president Bashar al Assad three days to halt the violence and allow in observers to monitor the situation.
It also pledged to introduce economic sanctions if the deadline is not met.
A source told Sky news: \"Syria has agreed to allow a senior Arab League mission into the country.
\"It has taken 36 hours of frantic discussions between Damascus and the Arab League to reach this agreement.
\"The deadline by the Arab League is Saturday. Syria is confident it has fulfilled all demands by the Arab League and is ready to sign as soon as the Arab League are ready.\"
The country\'s foreign minister is expected to make the announcement later.
It comes a day after Sky revealed that Britain, France and Germany are pushing for a UN vote to condemn the Syrian regime for its ongoing military crackdown against civilians.
Speaking on Friday, French Foreign Minister Alain Juppe said that tougher sanctions were needed on Syria and that France was ready to work together with the Syrian opposition.
Syria has agreed \"in principle\" to allow an Arab League observer mission into the country, an official said.
But the spokesman said Syria was still studying the details.
The Arab League suspended Syria earlier this week over its deadly crackdown on an eight-month-old uprising.
The 22-member body has proposed sending hundreds of observers to try to help end the bloodshed.
The UN estimates some 3,500 people have been killed in the crackdown.
Syrian president Bashar Assad is facing mounting pressure from home and abroad over the country\'s crisis, which appears to be spiralling out of control as attacks by army defectors increase and world leaders look at possibilities for a Syrian regime without him.
French foreign minister Alain Juppe has called on the UN Security Council to act against Mr Assad\'s regime, saying the time has come to strengthen sanctions against Syria.
\"We must continue to exert pressure,\" Mr Juppe told a joint news conference with Turkish foreign minister Ahmet Davutoglu in Ankara. \"The UN must act ... it is not normal for the UN Security Council not to act.\"
Mr Juppe said France has called on Mr Assad to change but \"the regime did not want to know, which is not acceptable\".
He said France wants to work with the Arab League and countries of the region including Turkey, as well as with the Syrian opposition.