Guardiola has just won his third consecutive league title with Bayern Munich, but Stoke's Swiss international claims the Premier League is a different level of competition:
"Man City will expect to win everything and it will be difficult because next season will be a very tough season, the league is getting much better."
The former Barcelona manager coached Shaqiri for two seasons during his spell at Bayern, and the Stoke man gave a glowing reference of the Spaniard's abilities:
"I think that on the pitch he is a very good coach and the players will be learning a lot off him. He has a very good staff who work very good."
Next season, the Premier League is likely to be one of the most highly competitive campaigns in history, with a string of high profile managers taking their positions at England's top clubs.
There is also the matter of the new TV deal that has been signed, with an even split amongst all Premier League clubs, which will, in turn, enable the so-called smaller clubs to compete financially.
Shaqiri finished up by saying how much stronger the Premier League is compared to other top European leagues:
"It is a different league to Germany and Spain because in Germany you only have two or three teams who are good, whereas in England now every team is tough to play."
Manchester City still have not assured their Champions League qualification for next season, and need a win against Swansea City on Sunday to guarantee their place in Europe's elite competition.