(Reuters) - Paris St Germain have been labelled as the side to beat in the Champions League since Lionel Messi joined during the close season but coach Mauricio Pochettino warned that he had not yet turned his stellar cast of players into a team.

PSG signed Messi as a free agent from Barcelona to assemble a formidable attacking trio with France striker Kylian Mbappe and Brazil forward Neymar, but they have yet to show what they are capable of together.