Both Sakho and Valencia joined the Hammers in the summer of 2014, and both have been important for the London outfit so far this season.
Senegal international striker Sakho has scored nine goals and created 15 chances in 19 Premier League appearances, while having a pass accuracy of 58% and a shot accuracy of 43%.
Meanwhile, Ecuador international forward Valencia has scored four goals and created 11 chances in 25 league matches, while having a pass accuracy of 76% and a shot accuracy of 45%.
Nene, who moved to West Ham on a free transfer in February, has been impressed with the duo and speaks highly of them.
“They are high-level players,” the 33-year-old told West Ham’s official website. “Diafra Sakho, just give him the ball and let him run. He is a clever player. Valencia is also an intelligent player and fast. So far, so good.
“We talk a lot also off the pitch in order to make this partnership improves. I look forward to playing as soon as possible. But I still need to improve physically to play the whole game.”
Nene has made just two appearances in the Premier League for West Ham, but he could feature against Arsenal on Saturday.
Valencia is suffering with a toe injury and is doubtful for the league game at the Emirates Stadium, which means that the former Paris Saint-Germain star could be included in the Hammers’ starting line-up.
If Valencia does start against Arsenal, then one suspects that he will be looking to make an impression.