Dez Bryant just touched down in Cleveland ... and the dude's already signing Browns gear!!
The free agent wide receiver was spotted scribbling his signature on a Browns helmet at Cleveland Hopkins Airport on Thursday ... right before he's scheduled to meet with the team.
FYI -- Cleveland's had a lot of trouble getting a hold of Dez ... with Browns GM John Dorsey saying Bryant wasn't returning any of his phone calls last week.
But, Dez quickly responded with a tweet saying he would be making a visit to The Land this week .