Eintracht Frankfurt coach
Frankfurt was promoted back to the top flight of German football after a one-year absence last season, but Veh says it will be going straight back down again if he does not get a solid backbone to his side.
"I think I have got some good guys so far, but we certainly need another three central defenders," he said.
"We all agree that you cannot win games in football without a defence. If we did not know that, then we may as well all give up now."
Frankfurt has sold one of its central defenders, Gordon Schildenfeld, leaving only
"We have got may young, talented players who we can really improve, but only on the condition that I get my central defender," he added in the Suddeutsche Zeitung newspaper.
Hoffenheim claimed a vital 3-1 win against second-tier Kaiserslautern in the first leg of the Bundesliga play-off.