Bayern Munich take on ambitious Manchester City in the Champions League on Tuesday, a clash between European aristocrats and a big-spending team desperate to prove they belong among the elite.
The clash symbolises what this competition is all about; a clash of current European powerhouses on one level, and a clash of Old Money v New Money on another. While Bayern have strong links with Old Trafford, having played United nine times in all, they have never met City before and their relationship has not started in the most friendly way.
There was some ill-feeling over the summer transfer of Jerome Boateng from City to Bayern, and Bayern's outspoken chief executive Karl-Heinz Rummenigge says City were bailed out by their owners having accrued debts of 140.0 million euros.
City manager Roberto Mancini responded, "People are mistaken about Manchester City. They accuse us of spending more money than anyone this year and every time they said that they are mistaken."
Bayern have been European champions four times while City have only ever played three matches in either the old European Cup or the Champions League combined.
But now, thanks to the hundreds of millions invested in the club by Abu Dhabi owner Sheikh Mansour, they meet as equals.
Belarusian club BATE Borisov welcome European champions Barcelona for their Group H match on Wednesday. Barcelona come calling after a 5-0 demolition of Atletico Madrid on Saturday with Lionel Messi scoring a hattrick.
Anything other than another win for Pep Guardiola's team, who began the defence of their trophy with a 2-2 draw with AC Milan, will represent the upset of the night, if not the season.
Rivals Real Madrid, who won 1-0 at Dinamo Zagreb in their group opener, will have to negotiate their way past Ajax without coach Jose Mourinho on the bench as his touchline ban continues. 2010 champions Inter Milan going to CSKA Moscow with new coach Claudio Ranieri.