Engaging a non-agile team member in an agile team

Engaging a non-agile team member in an agile team

B: have a team with high velocity
D: engage the new team member
A: deliver value to company
A-C:Assumption(s)Injection(s)
agile spirit is a key success factor for delivering quality on timeteam might be able to deliver value without an agile spirit
C: have a team with agile spirit
D': not engage the team member

In order to deliver value to company I must have a team with high velocity and in order to have a team with high velocity I must engage the new team member. But, in order to deliver value to company I must also have a team with agile spirit and in order to have a team with agile spirit I must not engage the team member. I can't both engage the new team member and not engage the team member.

RelationAssumption(s)Injection(s)
B-Donly members of the team can participate in team effort
more team members yield to higher velocity
let the team member participate in team project without being part of the team
the team member "steals" from us a lot of time because of its character & skills
C-D'this team member is not agile
a bad team member can have a bad effect on the whole team
firing the new team member after the trial period will have bad consequences on team morale
the team is stronger that what it seems
this team member was not agile on his old team but will be agile on the new team
not all the team members must have agile spirit
A-Bhigh velocity means many projects completed high velocity doesn't necessarily yield value
A-Cagile spirit is a key success factor for delivering quality on timeteam might be able to deliver value without an agile spirit