Greig Laidlaw a Six Nations doubt for Scotland after being sent back to club

• Scotland captain to undergo further tests at Gloucester• Five other Scotland players also being assessed for injuriesGreig Laidlaw is a potential doubt for the remainder of the Six Nations Championship and the Scotland captain has returned to Gloucester for further assessment after injuring his ankle during the 22-16 defeat against France.The scrum-half was hurt in the 24th minute of Sunday’s bruising match in Paris, in which Scotland’s medical team were kept busy with a number of injuries. Related: Six Nations setting higher standards by keeping up with the Joneses | Andy Bull Continue rea…