The club promised to work with South Yorkshire police to help identify those responsible.

On Thursday Jessica Ennis-Hill said she would want her name removed from a stand named after her by the club if they re-sign the convicted rapist.

Later that day a vile tweet was sent saying: “I hope he [Evans] rapes her.”

United did not say in the statement whether they intend to offer Evans, who was with the club before going to prison, a new contract, but said they will ban for life those who send or have sent abusive messages.

Police are investigating the rape tweets and United have said that anyone involved in abusing Ennis-Hill, or others who disagree with the club’s decision to let Evans train with them, will be banned for life.

“Sheffield United Football Club is appalled at the recent condemnation and abuse that has been levelled at both some of its more high-profile supporters and those who have no connections to the club but who have voiced their opinion on the matter,” a statement released read.

“Regarding the personal tirade against individuals, the club will work with both South Yorkshire Police and any other supportive body to help identify the instigators. This will include abuse through social media messaging and chanting at grounds.

“Anyone who is found to be involved in such practice will be banned for life from Bramall Lane.

“Sheffield United will not accept the abuse that is being received by those who have voiced their opinion. 

“They have felt it necessary and have been courageous enough to have made their statement and this should be respected.”