Sport Champions League Live: Man City vs Porto, Bayern Munich vs Atletico
Bundesliga: Bayern-PK in the live ticker: The next Xabi and the return of the "mercenary"
FC Bayern Munich will officially present two newcomers to the summer transfer period in the form of a press conference on Tuesday, Marc Roca and Douglas Costa. As on Monday, sports director Hasan Salihamidzic will be available to answer questions from the media. The whole thing is available here in the live ticker from 1.30 p.m. © Provided by SPOX Newcomers and returnees: FC Bayern Munich introduces Marc Roca and Douglas Costa. This article is continuously updated.
Manchester City's bid to win the Champions League gets underway when they host Porto for their first group stage game.
Despite recent dominance domestically Pep Guardiola's side have stumbled on Europe's biggest stage in recent years, going out to surprise exits by Lyon and Tottenham Hotspur in the quarter-finals in the last two seasons.
Elsewhere, reigning champions Bayern Munich welcome Atletico Madrid to the Allianz Arena as Europa League finalists Inter Milan host Borussia Monchengladbach.
Follow Sportsmail's DAN RIPLEY for live UCL coverage including score, lineups and updates prior and throughout the game, with full coverage of Man City vs Porto.
Vieira bags maiden Champions League goal in Porto victory .
Vieira bags maiden Champions League goal in Porto victoryThe win was a first in the pool for Porto and moved them into second place after two rounds of matches, three points behind leaders Manchester City, who have a full haul of six following their 3-0 victory at Olympique Marseille.