Gundogan is very good for tiki taka after about six years with Pep Guardiola at Manchester City. Even Pep upgraded initial tiki taka from Barcelona to Bayern Munich then Manchester City, the core idea of tiki taka was digested by Gundogan. He will not have difficulty in Barcelona especially we saw Xavi did not change the initial tiki taka too much in one season and a half with Barcelona.
Gundogan will have no trouble with Xavi's game tactics. he will be a tremendous support for Lewandowski. this season could be the most productive season for Barcelona I think. I don't understand why Pep could let Gundogan go to Barcelona. he is one of City's important players in getting a trophy this season. I'm sure it will be Xavi's luck this season.