London, June 6 (Reporter) County Championship leaders Nottinghamshire will have seamer Mohammad Abbas available for the whole summer after he agreed a mid-season extension. The Pakistan bowler, 35, was initially due to be unavailable for the county's four championship games in June and July before returning in September. However, an agreement has been reached for him to play the whole campaign, according to a BBC news. "I'm very happy to be staying with Nottinghamshire for more games," Abbas told the club website. "We have started the season really well, so I will be doing everything I can to make sure that carries on for the rest of the summer." Abbas has taken 16 wickets in his opening three games for Nottinghamshire, who are 10 points clear at the top of Division One...////...