Spain striker Iago Aspas injured his leg during Celta Vigo's 2-0 loss at Barcelona on Saturday and is expected to be out for four weeks. Celta says Aspas has a muscle injury in his right thigh. It says if medical tests confirm the initial diagnosis he will be sidelined a month. The 31-year-old Aspas is Celta's top scorer and the fourth leading scorer in the Spanish league with 10. He had to leave in the second half, walking off gingerly. ``Any injury (to a teammate) hurts us, but an injury to Iago hurts even more,'' Celta defender Hugo Mallo said. (For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)