I can picture his face, but I don't remember his name.
I can see him in my mind's eye, but his name isn't coming to mind.
この場合、次のような言い方ができますよ。
ーI can picture his face, but I don't remember his name.
「彼の顔は思い浮かぶんだけど、名前が思い出せない」
ーI can see him in my mind's eye, but his name isn't coming to mind.
「彼の顔は思い浮かぶんだけど、名前絵が出てこない」
ご参考まで!