I remember Ravi Zacharias asked this to a Muslim student once during Q&A.
In Quran 42:11, man are not made in God's image/likeness.
Many Muslims claim men have God's attributes, in relating to the part where God breathed His spirit into man.
When they deny a man has God's image, they think in terms of physical form. I think it is shallow to confuse terminology like that. As it is by denying Trinity using mathematics.