NASB 1995
"And if you are willing to accept it, John himself is Elijah who was to come.

American Standard Version
And if ye are willing to receive it, this is Elijah, that is to come.

Berean Study Bible
And if you are willing to accept it, he is the Elijah who was to come.

Douay-Rheims Bible
And if you will receive it, he is Elias that is to come.

English Revised Version
And if ye are willing to receive it, this is Elijah, which is to come.

King James Bible
And if ye will receive it, this is Elias, which was for to come.

World English Bible
If you are willing to receive it, this is Elijah, who is to come.

Young's Literal Translation
and if ye are willing to receive it, he is Elijah who was about to come;

Matthew 11:14 Additional Translations ...