what now for british tennis  tim henman s decision to quit davis cup tennis has left the british team with a gargantuan void to fill.  the world number seven is tied for fourth among his countrymen for wins in the history of the tournament (he has 36 from his 50 rubbers). and great britain s last davis cup win without henman came against slovenia as far back as 1996. worse could follow  according to former british team member chris bailey. bailey told bbc sport:  after tim s announcement  i doubt greg rusedski will be that far behind him.  but without their top two  where does that leave british ambitions in the sport s premier team event  captain jeremy bates has singled out alex bogdanovic and andrew murray as potential replacements. the yugoslavian-born bogdanovic  though  is 184 places below henman in the world rankings and has played just two cup ties - winning one and losing the other.  murray  on the other hand  is 407th in the current atp entry list and yet to make his cup debut. but bailey does see some hope for the future. he said:  now we ve dropped down to the euro-africa zone  the time was right for him to step down and let the young guys come to the fore.  britain s next opponents  israel  are hardly likely to be quaking in their boots ahead of the 4-6 march match against a likely trio of bogdanovic  murray and the 187th-ranked arvind parmar. bailey said:  it will be tough for gb to move up  but there comes a time when our young players have to step up. this was always going to be inevitable with tim and greg s growing years.  i m confident about the future. i wouldn t lay money on us getting back into the world group next year  but i d imagine in five years time we ll be competing for the major honours.  of those lining up to replace henman  the 17-year-old murray  with four futures titles under his belt last year  looks the best long-term bet.  murray is the one that looks likeliest to take over tim s mantle   said bailey.  he has an enormous amount of self-confidence  judging by what he s said in the past.  bogdanovic  three years murray s senior  has had a more troubled time under britain s davis cup umbrella.  while murray has been marked out as britain s golden boy  bogdanovic was warned by the lawn tennis association for a lack of drive at the end of 2003. and bailey said:  despite that  alex is clearly talented as well  while arvind is another contender.  they re among the guys who have experienced the intensity of davis cup tennis - whether as players or on the sidelines.  the lta has always done an exceptional job of ensuring that.  now they ll finally get to play regularly in the cauldron of the cup. and i m confident that will springboard team gb to greater success.