Five British lawmakers who represent the city of Leeds have written to Leeds United owner Andrea Radrizzani, urging him to reconsider the club's planned post-season trip to Myanmar.
The Championship club are due to play two friendlies as they seek to build a fanbase in the troubled Southeast Asian country.
Myanmar is in the eye of a storm of criticism over its treatment of its Rohingya Muslim minority, around 700,000 of whom have been driven into Bangladesh since August last year in what the UN says amounts to "ethnic cleansing".
Radrizzani on Wednesday defended the tour, arguing it would have a positive impact after it had been branded "morally corrupt" by critics.
MP Rachel Reeves posted the lawmakers' letter on Twitter on Friday alongside the words: "If Leeds United play in Myanmar, they will effectively be endorsing the actions of a government that has forced almost 700,000 people to flee its brutal regime of terror and violence.
"@LUFC has a moral responsibility and should cancel plans to tour Myanmar."
In the letter, the MPs expressed "serious concerns" about next month's proposed trip.
They said it would be "deeply inappropriate for Leeds United to play in Myanmar" and added: "We hope you will think about the representations we are making and reconsider the decision for Leeds United to play in Myanmar."