* Senior Kurdish official says troops could enter within two days
* Jia Kurd: Any political discussions would come later
* Turkish army waging offensive in Syria's Afrin (Adds YPG spokesman, background)
By Ellen Francis
BEIRUT, Feb 18 (Reuters) - Syrian Kurdish forces and the Damascus government have reached an agreement for the Syrian army to enter the Afrin region to help repel a Turkish offensive, a senior Kurdish official said on Sunday.
Badran Jia Kurd, an adviser to the Kurdish-led administration in northern Syria, told Reuters army troops would deploy along some border positions and could enter the region within the next two days.
The deal underscores the increasingly tangled battlefield in northern Syria, driven by a web of rivalries and alliances among Kurdish forces, the Syrian government, rebel factions, Turkey, the United States and Russia.
The complex relationship between the Damascus government and Syrian Kurdish forces, which each holds more territory than any other side in the war, will be pivotal in how the conflict unfolds.
Ankara launched an air and ground offensive on Afrin last month targeting the Kurdish YPG militia, which it views as a terrorist group with links to an armed insurrection in Turkey.
Turkey's NATO ally the United States has armed the YPG as part of an alliance it backs in Syria against Islamic State. But while Washington has a military presence in the much larger swathes of Syria that the YPG and its allies control further east, it has not given support to the YPG in Afrin.
"We can cooperate with any side that lends us a helping hand in light of the barbaric crimes and the international silence," Jia Kurd said.
There was no immediate comment from the Syrian military.
When asked about the reported deal, YPG spokesman Nouri Mahmoud repeated an earlier statement that said the Syrian army had yet to respond to their calls to help protect Afrin.
UTTERLY DIFFERENT VISIONS
Although Syrian President Bashar al-Assad's government and the YPG have mostly avoided direct conflict, they have occasionally clashed and they espouse utterly different visions for Syria's future.
While both have at times suggested a long-term agreement between them might be possible, Assad says he wants to take back the whole country.
Jia Kurd said the agreement with Damascus on Afrin was purely military and included no wider political arrangements.
"When it comes to the political and administrative matters in the region, it will be agreed upon with Damascus in the later stages through direct negotiations and discussions," he said.