Kai Havertz leaves with blood pouring from his head four days after a similar injury and receives a strange warning

Kai Havertz has suffered another bloody head injury playing for Arsenal, just four days since his last one.

The German had to come off the 1-0 Champions League defeat against Inter Milan on Wednesday after a The nasty collision left his head bleeding.

He had to give him stitches, but he recovered in time to start against Chelsea on Sunday.

But in the second half of the 1-1 draw at Stamford Bridge, Havertz had to go for treatment for other head wound after being reopened.

Chelsea's Marc Cucurella drew referee Michael Oliver's attention to the blood on Havertz's face, knowing that doing so would see the Gunners star sent off.

Havertz attempted to receive treatment in the field.

However, the referee forced him to leave after considering that he was not in immediate danger.

He soon found himself booked after he was deemed to have taken too long to leave the field.

The blow to Havertz's head added insult to injury after the VAR had already disallowed a goal by the German in the first half on his return to his former club.

After putting the ball in the net, the former Chelsea star walked away to celebrate.

He even put his finger to his lips to “shh” the Stamford Bridge crowd.

Unfortunately for Havertz, his effort was soon disallowed for offside.

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Arsenal managed with 10 men while Havertz received treatment.

Then in the second half, the Gunners broke the deadlock.

Gabriel Martinelli scored on the hour mark to send the away team at The Bridge into ecstasy.

However, Chelsea soon counterattacked, with Pedro Neto finishing to make it 1-1 at the final whistle.