Jordan Henderson
Henderson was replaced at half time by Joe Allen and faces an anxious wait to discover the extent of a knee injury.Getty Images

Liverpool captain Jordan Henderson faces a scan to determine the extent of a knee injury which forced him out of the Europa League quarter-final first leg against Borussia Dortmund, with manager Jurgen Klopp describing the blow as "really bad news" for the Merseyside club. Henderson picked up the problem in the first half and though he continued until the break was eventually replaced by Joe Allen for the second 45 minutes.

The England international spent much of the first half of the campaign out with a heel injury and recently admitted he continued to be hindered by that same problem. The new issue picked up in Dortmund appears to be a fresh fitness concern which came during the 1-1 draw at the Westfalenstadion.

"There is disappointment of Henderson," the Liverpool manager told BT Sport after the game. "His injury is a knee injury so it looks not too good. It is really bad news. For sure [he will have a scan]. The blow worked to overshadow an otherwise encouraging night for the Reds who take away goal back to Anfield for the second leg in a weeks' time.

Divock Origi fired home to give Liverpool a well-earned first half lead and though Dortmund captain Mats Hummels headed home less than three minutes after the break Thomas Tuchel's side were unable to break through a resilient defence. Klopp was delighted with the way his side continued to test the Bundesliga side.

"Dortmund are a really good side but we had our moments and everyone saw we could have won the game," he added on Liverpool's draw. "We concede this goal after a set-piece and that is not too necessary.

"We have a plan sometimes. Divock was made for this game with the space he can make with his speed with the ball and he can hold with his body so that is all really good. In the end it is 1-1, it is one of the result you can get when play Dortmund.

"I am pretty sure a lot of people thought we will lose two, three maybe 4-0. Of course they had their chances and they played really good and calm and stayed cool in the game but we had them in some moments. Around our goal we were brilliant and you have to work for these moments.

"Against an opponent like Dortmund you have to move, you have to defend with all you have until you get your chance. We are not that far on our way like they and we cannot play like they play but we can defend them in most moments and we can score goals so always you can win."