Coates believes Shaqiri would be the last signing of the summer, but another arrival can't be ruled out if the opportunity presents itself.
Speaking to stokecityfc.com shortly after the confirmation of Shaqiri's club record £12million arrival from Inter Milan, Mr Coates said: "I would hope that he is the last signing. In football though you never know what is around the corner.
"I wouldn't say it is likely, but if something was to come up that made sense then we would look at it, of course.
"We are attracting great players to the Club now because we are progressing on and off the pitch and they are excited by the challenge here."