It was almost like he had eyes in the back of his head.
It looked like he had eyes in the back of his head.
この場合、次のような言い方ができます。
ーThere was a soccer player who had such good peripheral vision, it was almost like he had eyes in the back of his head.
「周辺視野がすごく良いサッカー選手がいて、頭の後ろに目がついているかのようだった」
peripheral vision で「周辺視野」
it was almost like he had eyes in the back of his head. で「彼は頭の後ろに目がついているかのようだった」
ーI knew of a soccer player who had such an awareness of what was happening around him, it looked like he had eyes in the back of his head.
「彼の周りで何が起こっているかをよく認識しているサッカー選手を知っているが、頭の後ろに目がついているかのようだった」it looked like he had eyes in the back of his head. で「彼は頭の後ろに目があるようだった」
ご参考まで!