According to the quote on espn desportes.
"No me gusta cuando Oswaldo hace lo que hace, no me gusta cómo se comporta; se porta mal, pero no me importa, mientras sigamos ganando. Oswaldo nunca nos muestra respeto",
Translation, "I don't like when Oswaldo does what he does, I don't like the way he acts, he behaves badly, but I don't care as long as we win. Oswaldo has never shown us respect."
I think Donovan's feelings might be related to the incident on video here. Luis got an exclusive with Eddie after the action by Sanchez.