International student Application support by my uncle

[hafizmuhammadatif]

Hi everyone ,
one of my nephew because of certain family situations have been raised by me not by his father . All his schooling and university degree was supported by me .
Now he is graduated and want to apply for Master degree in Pharmacy .
Can I support his funding letter ?
I am Canadian citizen
Any threat for master programs?
If this thread has been discussed any please let me guide there .
Thanks in advance .