Siberia needs people.
Putin loves the Palis. He should welcome them.
You probably say this kidding but Russia's interior is actually one of the least populated (persons per sq mile) places on earth.
Russian has had problems with Muslims in Russia and on its borders for some time. I doubt that Putin/Russia would have any interest in settling Gazan Muslims within its borders.
Any nation that welcomes Muslims of any stripe will eventually come to regret it. Islam is a terrorist organization that sleeps when it's convenient only to later arise to kill and terrorize its naïve and deceived host.