Maybe not but he is a useful option and we have all seen the proof yet some of us still want to ignore it.
I don't agree with it not being good that he is another option though. What do you get with Oumar? Chances. People can say (and do say) what they want about the lad but he always finds himself with chances. DCL and Tosun can spend whole games without a sniff of goal. No matter the situation, opponent etc, Niasse always seems to find himself in a position to score.
Of course some will then claim this is pure luck or something as opposed to actually conceding that he has intelligent movement and good positioning because he has no qualities etc.
The slating for him hitting the bar this past week is ridiculous too. Anyone can see that he was unsighted as Calvert Lewin went to head the ball first and missed it. He actually showed decent technique to get a shot off with that much power with a millisecond to react to it.
Ideally of course you want better, everyone wants better in everything, but he is a useful option and right now he offers more of a consistent goal threat than any of the strikers we have.
I genuinely think if he played week in week out he would be looking about 20 goals a season for us. He would also have just as many loose passes put into the main stand and incidents of tripping over his own feet. It depends where people are happy to trade off these sides of his game. Personally, give me the goals.