The word agradarán is the future form of agradar in the third person plural.
See the full agradar conjugation

agradar

Te apuesto a que los internos de la prisión te agradarán.
I bet the prison inmates will like you just fine.
Creo que te agradarán los resultados.
I think you'll be pleased with the results.
Todos te agradarán cuando los llegues a conocer.
You'll really like everyone once you get a chance to know them.
No obstante, escucharás cosas que no te agradarán.
But still... there are things that you will hear you do not like.
Probablemente no les agradarán.
You probably wouldn't like them.
Creo que te agradarán.
I think you'll like them.
Sin duda nos agradarán.
Oh, we're bound to like them.
Sin duda nos agradarán.
We're bound to like them.
Incluso los animales y las plantas les servirán como a sus amos y agradarán a sus corazones como lo quieran.
Even the animals and plants will serve them as their masters and please their hearts as they want.
Jake... a medida que crezcas, te darás cuenta... de que hay muchas cosas que no te agradarán.
Jake 'n Bake... as you get older, you're gonna realize... there are a lot of things that you don't like, OK?
A ella no le agradarán más de lo que me agradan a mí, pero me gustaba la posibilidad que hayamos sido alguna de nosotras tres.
She won't like you two... any more than you like me, but I liked the odds... better when it was just the three of us.
¿Por qué haría eso si no me agradaran?
Why would I do that if I didn't like you?
Si fuera posible lograr algunos progresos que agradaran al sector del automóvil de la UE, entonces realmente se beneficiarían y se mantendrían los índices de empleo, el sólido PIB y el nivel de vida esperado.
If some progress could be achieved to bring more satisfaction to the EU car industry, then employment levels, strong GDP and expected standards of living would really benefit and be preserved.
Creo que los vecinos te agradarán.
And I think you'll really like the neighbors.
Hay algunos hombres que te agradarán.
Oh, come on in. There are some men here you'll like.
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