Celtic are making tracks in the market as they fly out to the United States for a three-match camp against DC United, Manchester City and Chelsea. Following weeks of quiet on the transfer front, Brendan Rodgers’ men have come to life this week as bodies are set to bolster his talented squad. Free agent goalkeeper Kasper Schmeichel is undergoing his medical at Celtic today ahead of joining after a spell at Anderlecht. Meanwhile, Viljami Sinisalo is headed north of the border for £1 million from Aston Villa following an excellent loan spell at Exeter City last campaign. Set to pen a five-year de…