The player will now serve a five-match suspension.Speaking of the verdict and his decision, Jonjo said: “I am very disappointed and frustrated with the outcome of the hearing. I strongly maintain that I did not use the offensive language that has been alleged.
“Despite my strong disappointment, we think an appeal is very unlikely to change the panel’s decision on the case, so I have decided not to take that option.
“Appealing the ban would also extend the period of uncertainty for the club and the team during such an important part of the season.
“This would not be fair on my club, manager or teammates and I want to draw a line under this now so that I can return to help my team with our promotion challenge as soon as possible.“
Manager Rafa Benitez said: “Jonjo has maintained his position from the outset and as such has received our full support. Despite this issue going on in the background he has continued to train and play really well.
"Now he has made the decision not to appeal the verdict we can focus on the upcoming games without uncertainty and distraction.”
Newcastle United does not tolerate any form of discrimination or abuse and condemns the use of racist, sexist or homophobic remarks in the strongest possible terms.
The club will not be making any further comment.