Porto midfielder Hector Herrera is on Arsenal's radar this month.

TMW says Arsenal are planning a move for Porto ace Herrera.

Gunners boss Unai Emery is looking at the midfielder as he seeks to strenghten his option.

But he's not alone. Roma, Atletico Madrid, Sevilla and Wolves have also been linked.

Herrera enjoyed an outstanding World Cup with Mexico and was linked with Real Madrid last summer.