Senderos talk played down after McGinn sinks Morton
Niall McGinn's left-footed strike after 35 minutes gave Celtic victory over Morton in their Active Nation Scottish Cup fourth-round tie at Cappielow.
The Scottish Premier League side had not seriously troubled Ton goalkeeper Colin Stewart before striker Marc-Antoine Fortune cut the ball back for the former Derry City player who drove past Stewart from 12 yards.
From then on the visitors looked comfortable as Morton never really threatened a shock.
Celtic will now go away to Irn-Bru Second Division side Stenhousemuir in the next round, if Dunfermline, who were thrown out of the competition by the Scottish Football Association for breaking various rules in their win against the Warriors, do not win their appeal.
After the game Celtic boss Tony Mowbray poured cold water on speculation that Arsenal defender Philippe Senderos could be moving to Parkhead.
Arsenal manager Arsene Wenger had earlier confirmed the Hoops' interest in the 24-year-old Swiss defender, who himself said: "I am very honoured that a big club like Celtic are interested in me and a loan deal right now would suit me perfectly."
However, Celtic boss insisted: "There has been no bid. There is no decision (to be made) from Senderos.We have an interest in many players, I would suggest. That is only one enquiry of many."